Quiz - chemistry - Classification of Elements and Periodicity in Properties-PYQ

Q1. Identify the incorrect match. Name ($ ext{i}$) Unnilunium, ($ ext{ii}$) Unniltrium, ($ ext{iii}$) Unnilhexium, ($ ext{iv}$) Unununnium. $\text{IUPAC Official Name } (\text{A}) \text{ Mendelevium } (\text{B}) \text{ Lawrencium } (\text{C}) \text{ Seaborgium } (\text{D}) \text{ Darmstadtium}$. Source: orcusprep.in

NEET 2020

easy

(A), (i)

(B), (ii)

(C), (iii)

(D), (iv)

Q2. The element $\text{Z} = 114$ has been discovered recently. It will belong to which of the following family/group and electronic configuration? Source: orcusprep.in

NEET 2017

medium

Carbon family, $[\text{Rn}] 5f^{14} 6d^{10} 7s^2 7p^2$

Oxygen family, $[\text{Rn}] 5f^{14} 6d^{10} 7s^2 7p^4$

Nitrogen family, $[\text{Rn}] 5f^{14} 6d^{10} 7s^2 7p^6$

Halogen family, $[\text{Rn}] 5f^{14} 6d^{10} 7s^2 7p^5$

Q3. An atom has electronic configuration $1s^2 2s^2 2p^6 3s^2 3p^6 3d^3 4s^2$, you will place it in Source: orcusprep.in

AIPMT 2002

easy

fifth group

fifteenth group

second group

third group.

Q4. The electronic configuration of an element is $1s^2 2s^2 2p^6 3s^2 3p^3$. What is the atomic number of the element, which is just below the above element in the periodic table? Source: orcusprep.in

AIPMT 1995

medium

36

49

33

34

Q5. If the atomic number of an element is $\mathbf{33}$, it will be placed in the periodic table in the Source: orcusprep.in

AIPMT 1993

easy

first group

third group

fifth group

seventh group.

Q6. The electronic configuration of four elements are given below. Which elements does not belong to the same family as others? ($ ext{a}$) $[\text{Xe}]4f^{14}5d^{10}6s^2$, ($ ext{b}$) $[\text{Kr}]4d^{10}5s^2$, ($ ext{c}$) $[\text{Ne}]3s^2 3p^5$, ($ ext{d}$) $[\text{Ar}]3d^{10}4s^2$ Source: orcusprep.in

AIPMT 1989

medium

[Xe]$4f^{14}5d^{10}6s^2$

[Kr]$4d^{10}5s^2$

[Ne]$3s^2 3p^5$

[Ar]$3d^{10}4s^2$

Q7. For the second period elements the correct increasing order of first ionization enthalpy is Source: orcusprep.in

NEET 2019

medium

Li < Be < B < C < O < N < F < Ne

Li < Be < B < C < N < O < F < Ne

Li < B < Be < C < O < N < F < Ne

Li < B < Be < C < N < O < F < Ne

Q8. Match the oxide given in column I with its property given in column II. Column I: ($ ext{i}$) $\text{Na}_2\text{O}$, ($ ext{ii}$) $\text{Al}_2\text{O}_3$, ($ ext{iii}$) $\text{N}_2\text{O}$, ($ ext{iv}$) $\text{Cl}_2\text{O}_7$. Column II: ($ ext{A}$) Neutral, ($ ext{B}$) Basic, ($ ext{C}$) Acidic, ($ ext{D}$) Amphoteric. Which of the following options has all correct pairs? Source: orcusprep.in

NEET 2019

easy

(i)-B, (ii)-A, (iii)-D, (iv)-C

(i)-C, (ii)-B, (iii)-A, (iv)-D

(i)-A, (ii)-D, (iii)-B, (iv)-C

(i)-B, (ii)-D, (iii)-A, (iv)-C

Q9. Which of the following oxides is most acidic in nature? Source: orcusprep.in

NEET 2018

easy

$\text{MgO}$

$\text{BeO}$

$\text{BaO}$

$\text{CaO}$

Q10. In which of the following options the order of arrangement does not agree with the variation of property indicated against it? Source: orcusprep.in

NEET 2016

medium

$\text{I} < \text{Br} < \text{Cl} < \text{F}$ (increasing electron gain enthalpy)

$\text{Li} < \text{Na} < \text{K} < \text{Rb}$ (increasing metallic radius)

$\text{Al}^{3+} < \text{Mg}^{2+} < \text{Na}^{+} < \text{F}^{-}$ (increasing ionic size)

$\text{B} < \text{C} < \text{N} < \text{O}$ (increasing first ionisation enthalpy)

Q11. The formation of the oxide ion, $\text{O}^{2-}(\text{g})$ from oxygen atom requires first an exothermic and then an endothermic step as shown below : $\text{O}(\text{g}) + e^{-} \to \text{O}^{-}(\text{g})$; $\Delta H^\circ_1 = -141 \text{ kJ mol}^{-1}$. $\text{O}^{-}(\text{g}) + e^{-} \to \text{O}^{2-}(\text{g})$; $\Delta H^\circ_2 = +780 \text{ kJ mol}^{-1}$. Thus, process of formation of $\text{O}^{2-}$ in gas phase is unfavourable even though $\text{O}^{2-}$ is isoelectronic with neon. It is due to the fact that, Source: orcusprep.in

AIPMT 2015

medium

$\text{O}^{-}$ ion has comparatively smaller size than oxygen atom

oxygen is more electronegative

addition of electron in oxygen results in larger size of the ion

electron repulsion outweighs the stability gained by achieving noble gas configuration.

Q12. Which of the following orders of ionic radii is correctly represented? Source: orcusprep.in

AIPMT 2014

easy

$\text{H}^{-} > \text{H}^{+} > \text{H}$

$\text{Na}^{+} > \text{F}^{-} > \text{O}^{2-}$

$\text{F}^{-} > \text{O}^{2-} > \text{Na}^{+}$

$\text{Al}^{3+} > \text{Mg}^{2+} > \text{N}^{3-}$

Q13. Which one of the following arrangements represents the correct order of least negative to most negative electron gain enthalpy for $\text{C}, \text{Ca}, \text{Al}, \text{F}$ and $\text{O}$? Source: orcusprep.in

NEET 2013

medium

$\text{Al} < \text{Ca} < \text{O} < \text{C} < \text{F}$

$\text{Al} < \text{O} < \text{C} < \text{Ca} < \text{F}$

$\text{C} < \text{F} < \text{O} < \text{Al} < \text{Ca}$

$\text{Ca} < \text{Al} < \text{C} < \text{O} < \text{F}$

Q14. In which of the following arrangements the given sequence is not strictly according to the property indicated against it? Source: orcusprep.in

AIPMT Mains 2012

medium

$\text{HF} < \text{HCl} < \text{HBr} < \text{HI}$ : increasing acidic strength

$\text{H}_2\text{O} < \text{H}_2\text{S} < \text{H}_2\text{Se} < \text{H}_2\text{Te}$ : increasing $\text{p}K_a$ values

$\text{NH}_3 < \text{PH}_3 < \text{AsH}_3 < \text{SbH}_3$ : increasing acidic character

$\text{CO}_2 < \text{SiO}_2 < \text{SnO}_2 < \text{PbO}_2$ : increasing oxidising power

Q15. Identify the wrong statement in the following. Source: orcusprep.in

AIPMT 2012

easy

Amongst isoelectronic species, smaller the positive charge on the cation, smaller is the ionic radius.

Amongst isoelectronic species, greater the negative charge on the anion, larger is the ionic radius.

Atomic radius of the elements increases as one moves down the first group of the periodic table.

Atomic radius of the elements decreases as one moves across from left to right in the 2nd period of the periodic table.

Q16. What is the value of electron gain enthalpy of $\text{Na}^{+}$ if $\text{IE}_1$ of $\text{Na} = 5.1 \text{ eV}$? Source: orcusprep.in

AIPMT Mains 2011

easy

$-5.1 \text{ eV}$

$-10.2 \text{ eV}$

$+2.55 \text{ eV}$

$+10.2 \text{ eV}$

Q17. Which of the following oxides is amphoteric? Source: orcusprep.in

AIPMT Mains 2011

easy

$\text{SnO}_2$

$\text{CaO}$

$\text{SiO}_2$

$\text{CO}_2$

Q18. The correct order of the decreasing ionic radii among the following isoelectronic species is $\mathbf{\text{Ca}^{2+}, \text{K}^{+}, \text{S}^{2-}, \text{Cl}^{-}}$ Source: orcusprep.in

AIPMT 2010

easy

$\text{Ca}^{2+} > \text{K}^{+} > \text{S}^{2-} > \text{Cl}^{-}$

$\text{Cl}^{-} > \text{S}^{2-} > \text{Ca}^{2+} > \text{K}^{+}$

$\text{S}^{2-} > \text{Cl}^{-} > \text{K}^{+} > \text{Ca}^{2+}$

$\text{K}^{+} > \text{Ca}^{2+} > \text{Cl}^{-} > \text{S}^{2-}$

Q19. Which of the following represents the correct order of increasing electron gain enthalpy with negative sign for the elements $\mathbf{\text{O}, \text{S}, \text{F} \text{ and } \text{Cl}}$? Source: orcusprep.in

AIPMT 2010

medium

$\text{Cl} < \text{F} < \text{O} < \text{S}$

$\text{O} < \text{S} < \text{F} < \text{Cl}$

$\text{F} < \text{S} < \text{O} < \text{Cl}$

$\text{S} < \text{O} < \text{Cl} < \text{F}$

Q20. Among the elements $\mathbf{\text{Ca}, \text{Mg}, \text{P} \text{ and } \text{Cl}}$, the order of increasing atomic radii is Source: orcusprep.in

AIPMT Mains 2010

easy

$\text{Mg} < \text{Ca} < \text{Cl} < \text{P}$

$\text{Cl} < \text{P} < \text{Mg} < \text{Ca}$

$\text{P} < \text{Cl} < \text{Ca} < \text{Mg}$

$\text{Ca} < \text{Mg} < \text{P} < \text{Cl}$

Q21. Among the following which one has the highest cation to anion size ratio? Source: orcusprep.in

AIPMT Mains 2010

medium

$\text{CsI}$

$\text{CsF}$

$\text{LiF}$

$\text{NaF}$

Q22. Amongst the elements with following electronic configurations, which one of them may have the highest ionisation energy? ($ ext{a}$) $[\text{Ne}] [3s^2 3p^2]$, ($ ext{b}$) $[\text{Ar}] [3d^{10} 4s^2 4p^3]$, ($ ext{c}$) $[\text{Ne}] [3s^2 3p^1]$, ($ ext{d}$) $[\text{Ne}] [3s^2 3p^3]$ Source: orcusprep.in

AIPMT 2009

easy

$\text{Ne} [3s^2 3p^2]$

$\text{Ar} [3d^{10} 4s^2 4p^3]$

$\text{Ne} [3s^2 3p^1]$

$\text{Ne} [3s^2 3p^3]$

Q23. Identify the correct order of the size of the following. $\mathbf{\text{Ca}^{2+}, \text{K}^{+}, \text{Ar}, \text{Cl}^{-}, \text{S}^{2-}}$ Source: orcusprep.in

AIPMT 2007

medium

$\text{Ca}^{2+} < \text{K}^{+} < \text{Ar} < \text{Cl}^{-} < \text{S}^{2-}$

$\text{Ar} < \text{Ca}^{2+} < \text{K}^{+} < \text{Cl}^{-} < \text{S}^{2-}$

$\text{Ca}^{2+} < \text{Ar} < \text{K}^{+} < \text{Cl}^{-} < \text{S}^{2-}$

$\text{Ca}^{2+} < \text{K}^{+} < \text{Ar} < \text{S}^{2-} < \text{Cl}^{-}$

Q24. With which of the following electronic configuration an atom has the lowest ionisation enthalpy? Source: orcusprep.in

AIPMT 2007

easy

$1s^2 2s^2 2p^3$

$1s^2 2s^2 2p^5 3s^1$

$1s^2 2s^2 2p^6$

$1s^2 2s^2 2p^5$

Q25. Which one of the following ionic species has the greatest proton affinity to form stable compound? Source: orcusprep.in

AIPMT 2007

medium

$\text{NH}_2^{-}$

$\text{F}^{-}$

$\text{I}^{-}$

$\text{HS}^{-}$

Q26. Which of the following is the most basic oxide? Source: orcusprep.in

AIPMT 2006

easy

$\text{SeO}_2$

$\text{Al}_2\text{O}_3$

$\text{Sb}_2\text{O}_3$

$\text{Bi}_2\text{O}_3$

Q27. What is the correct relationship between the $\text{pH}$ of isomolar solutions of sodium oxide, $\text{Na}_2\text{O} (\text{pH}_1)$, sodium sulphide, $\text{Na}_2\text{S} (\text{pH}_2)$, sodium selenide, $\text{Na}_2\text{Se} (\text{pH}_3)$ and sodium telluride $\text{Na}_2\text{Te} (\text{pH}_4)$? Source: orcusprep.in

AIPMT 2005

hard

$\text{pH}_1 > \text{pH}_2 > \text{pH}_3 > \text{pH}_4$

$\text{pH}_1 > \text{pH}_2 \approx \text{pH}_3 > \text{pH}_4$

$\text{pH}_1 < \text{pH}_2 < \text{pH}_3 < \text{pH}_4$

$\text{pH}_1 < \text{pH}_2 < \text{pH}_3 \approx \text{pH}_4$

Q28. Ionic radii are Source: orcusprep.in

AIPMT 2004

easy

inversely proportional to effective nuclear charge

inversely proportional to square of effective nuclear charge

directly proportional to effective nuclear charge

directly proportional to square of effective nuclear charge.

Q29. The ions $\mathbf{\text{O}^{2-}, \text{F}^{-}, \text{Na}^{+}, \text{Mg}^{2+} \text{ and } \text{Al}^{3+}}$ are isoelectronic. Their ionic radii show Source: orcusprep.in

AIPMT 2003

easy

a significant increase from $\text{O}^{2-}$ to $\text{Al}^{3+}$

a significant decrease from $\text{O}^{2-}$ to $\text{Al}^{3+}$

an increase from $\text{O}^{2-}$ to $\text{F}^{-}$ and then decrease from $\text{Na}^{+}$ to $\text{Al}^{3+}$

a decrease from $\text{O}^{2-}$ to $\text{F}^{-}$ and then increase from $\text{Na}^{+}$ to $\text{Al}^{3+}$.

Q30. Which of the following order is wrong? Source: orcusprep.in

AIPMT 2002

medium

$\text{NH}_3 < \text{PH}_3 < \text{AsH}_3$ – acidic

$\text{Li} < \text{Be} < \text{B} < \text{C}$ – $\text{1}^{\text{st}} \text{ IP}$

$\text{Al}_2\text{O}_3 < \text{MgO} < \text{Na}_2\text{O} < \text{K}_2\text{O}$ – basic

$\text{Li}^{+} < \text{Na}^{+} < \text{K}^{+} < \text{Cs}^{+}$ – ionic radius.

Q31. Correct order of $\text{1}^{\text{st}}$ ionisation potential among following elements $\mathbf{\text{Be}, \text{B}, \text{C}, \text{N}, \text{O}}$ is Source: orcusprep.in

AIPMT 2001

medium

$\text{B} < \text{Be} < \text{C} < \text{O} < \text{N}$

$\text{B} < \text{Be} < \text{C} < \text{N} < \text{O}$

$\text{Be} < \text{B} < \text{C} < \text{N} < \text{O}$

$\text{Be} < \text{B} < \text{C} < \text{O} < \text{N}$

Q32. Which of the following elements has the maximum electron affinity? Source: orcusprep.in

AIPMT 1999

easy

$\text{I}$

$\text{Br}$

$\text{Cl}$

$\text{F}$

Q33. The first ionization potentials (eV) of $\text{Be}$ and $\text{B}$ respectively are Source: orcusprep.in

AIPMT 1998

easy

8.29, 8.29

9.32, 9.32

8.29, 9.32

9.32, 8.29

Q34. Which one of the following is correct order of the size of iodine species? Source: orcusprep.in

AIPMT 1997

easy

$\text{I}^{+} > \text{I}^{-} > \text{I}$

$\text{I}^{-} > \text{I} > \text{I}^{+}$

$\text{I} > \text{I}^{-} > \text{I}^{+}$

$\text{I} > \text{I}^{+} > \text{I}^{-}$

Q35. Which of the following ions is the largest in size? $\mathbf{\text{K}^{+}, \text{Ca}^{2+}, \text{Cl}^{-}, \text{S}^{2-}}$ Source: orcusprep.in

AIPMT 1996

easy

$\text{K}^{+}$

$\text{Ca}^{2+}$

$\text{Cl}^{-}$

$\text{S}^{2-}$

Q36. Which of the following has the smallest size? $\mathbf{\text{Al}^{3+}, \text{F}^{-}, \text{Na}^{+}, \text{Mg}^{2+}}$ Source: orcusprep.in

AIPMT 1996

easy

$\text{Al}^{3+}$

$\text{F}^{-}$

$\text{Na}^{+}$

$\text{Mg}^{2+}$

Q37. Among the following oxides, the one which is most basic is $\mathbf{\text{ZnO}, \text{MgO}, \text{Al}_2\text{O}_3, \text{N}_2\text{O}_5}$ Source: orcusprep.in

AIPMT 1994

easy

$\text{ZnO}$

$\text{MgO}$

$\text{Al}_2\text{O}_3$

$\text{N}_2\text{O}_5$

Q38. Which of the following has largest size? $\mathbf{\text{Na}, \text{Na}^{+}, \text{Na}^{-}}$ Source: orcusprep.in

AIPMT 1993

easy

$\text{Na}$

$\text{Na}^{+}$

$\text{Na}^{-}$

Can’t be predicted.

Q39. $\mathbf{\text{Na}^{+}, \text{Mg}^{2+}, \text{Al}^{3+} \text{ and } \text{Si}^{4+}}$ are isoelectronic. The order of their ionic size is Source: orcusprep.in

AIPMT 1993

easy

$\text{Na}^{+} > \text{Mg}^{2+} < \text{Al}^{3+} < \text{Si}^{4+}$

$\text{Na}^{+} < \text{Mg}^{2+} > \text{Al}^{3+} > \text{Si}^{4+}$

$\text{Na}^{+} > \text{Mg}^{2+} > \text{Al}^{3+} > \text{Si}^{4+}$

$\text{Na}^{+} < \text{Mg}^{2+} > \text{Al}^{3+} < \text{Si}^{4+}$

Q40. In the periodic table from left to right in a period, the atomic volume Source: orcusprep.in

AIPMT 1993

easy

decreases

increases

remains same

first decreases then increases.

Q41. Which electronic configuration of an element has abnormally high difference between second and third ionization energy? Source: orcusprep.in

AIPMT 1993

medium

$1s^2, 2s^2, 2p^6, 3s^1$

$1s^2, 2s^2, 2p^6, 3s^1, 3p^1$

$1s^2, 2s^2, 2p^6, 3s^2, 3p^2$

$1s^2, 2s^2, 2p^6, 3s^2$

Q42. One of the characteristic properties of non-metals is that they Source: orcusprep.in

AIPMT 1993

easy

are reducing agents

form basic oxides

form cations by electron gain

are electronegative.

Q43. Which one of the following has minimum value of cation/anion ratio? $\mathbf{\text{NaCl}, \text{KCl}, \text{MgCl}_2, \text{CaF}_2}$ Source: orcusprep.in

AIPMT 1993

hard

$\text{NaCl}$

$\text{KCl}$

$\text{MgCl}_2$

$\text{CaF}_2$

Q44. Which of the following sets has strongest tendency to form anions? $\mathbf{\text{Ga}, \text{Ni}, \text{Tl}}$, $\mathbf{\text{Na}, \text{Mg}, \text{Al}}$, $\mathbf{\text{N}, \text{O}, \text{F}}$, $\mathbf{\text{V}, \text{Cr}, \text{Mn}}$ Source: orcusprep.in

AIPMT 1993

easy

$\text{Ga}, \text{Ni}, \text{Tl}$

$\text{Na}, \text{Mg}, \text{Al}$

$\text{N}, \text{O}, \text{F}$

$\text{V}, \text{Cr}, \text{Mn}$

Q45. Elements of which of the following groups will form anions most readily? Source: orcusprep.in

AIPMT 1992

easy

Oxygen family

Nitrogen family

Halogens

Alkali metals

Q46. In the periodic table, with the increase in atomic number, the metallic character of an element Source: orcusprep.in

AIPMT 1989

easy

decreases in a period and increases in a group

increases in a period and decreases in a group

increases both in a period and the group

decreases in a period and the group.

Q47. Which of the following atoms will have the smallest size? $\mathbf{\text{Mg}, \text{Na}, \text{Be}, \text{Li}}$ Source: orcusprep.in

AIPMT 1989

easy

$\text{Mg}$

$\text{Na}$

$\text{Be}$

$\text{Li}$

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Chemistry - Classification of Elements and Periodicity in Properties-PYQ

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Chemistry - Classification of Elements and Periodicity in Properties-PYQ

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