Periodic Properties - Atomic Structure and Periodicity - Life Sciences Previous Year Questions

1

2010 · Life Sciences · Atomic Structure and Periodicity · Periodic Properties

Life Sciences (XL) 2010

The ionization energy follows the order

A

O₃⁺ > O₂ > O₃ > O₂⁻

B

O₂ > O₃⁺ > O₂⁻ > O₃

C

O₃⁺ > O₂⁻ > O₂ > O₃

D

O₂⁻ > O₃ > O₂ > O₃⁺

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2

2011 · Life Sciences · Atomic Structure and Periodicity · Periodic Properties

Life Sciences (XL) 2011

The ions with lowest and highest radii among O²⁻, F⁻, Na⁺ and Mg²⁺ are respectively,

A

Mg²⁺ and O²⁻

B

O²⁻ and F⁻

C

O²⁻ and Mg²⁺

D

Na⁺ and Mg²⁺

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3

2012 · Life Sciences · Atomic Structure and Periodicity · Periodic Properties

Life Sciences (XL) 2012

The ionic size of Na⁺, F^-, Mg²⁺ and Al³⁺ varies as

A

Al³⁺ > Mg²⁺ > Na⁺ > F^-

B

F^- > Na⁺ > Mg²⁺ > Al³⁺

C

Al³⁺ > Mg²⁺ > F^- > Na⁺

D

Na⁺ > F^- > Mg²⁺ > Al³⁺

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4

2019 · Life Sciences · Atomic Structure and Periodicity · Periodic Properties

Life Sciences (XL) 2019

The boiling point of halogens from F₂ to I₂ increases due to

A

decrease in electron affinity

B

decrease in ionization potential

C

dipole-dipole interaction

D

induced dipole – induced dipole interaction

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5

2020 · Life Sciences · Atomic Structure and Periodicity · Periodic Properties

Life Sciences (XL) 2020

The correct order of the first ionization energies of He, B, N and O in their corresponding ground state is

A

He > N > O > B

B

O > N > B > He

C

He > B > N > O

D

N > O > B > He

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6

2022 · Life Sciences · Atomic Structure and Periodicity · Periodic Properties

Life Sciences (XL) 2022

Which among the following has the least second ionization energy?

A

Al

B

Si

C

P

D

S

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7

2022 · Life Sciences · Atomic Structure and Periodicity · Periodic Properties

Life Sciences (XL) 2022

Which among the following metal ions has the highest enthalpy of hydration?
(Assume the given metal ions have the same counter ion.)
Given: Atomic numbers of Ti, V, Cr and Mn are 22, 23, 24 and 25, respectively.

A

\(Ti^{2+}\)

B

\(V^{2+}\)

C

\(Cr^{2+}\)

D

\(Mn^{2+}\)

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8

2023 · Life Sciences · Atomic Structure and Periodicity · Periodic Properties

Life Sciences (XL) 2023

Choose the CORRECT trend(s) of the first ionization energies among the following.
(Given: Atomic numbers C: 6; N: 7; O: 8; F: 9; Si: 14; P: 15; S: 16; Cl: 17)

A

C < N > O < F

B

Si < P > S < Cl

C

C < N < O < F

D

Si < P < S < Cl

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9

2024 · Life Sciences · Atomic Structure and Periodicity · Periodic Properties

Life Sciences (XL) 2024

The CORRECT order of electronegativity is

A

Al > Si > P > S

B

Al > S > Si > P

C

S > Si > Al > P

D

S > P > Si > Al

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10

2026 · Life Sciences · Atomic Structure and Periodicity · Periodic Properties

Life Sciences (XL) 2026

The option(s) with the CORRECT order of ionisation energy is/are

A

Al⁺ < Al²⁺ < Al³⁺ < Al⁴⁺

B

Al⁴⁺ < Al³⁺ < Al²⁺ < Al⁺

C

Cl⁻ < Cl < Cl⁺

D

Cl⁺ < Cl < Cl⁻

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