EASY

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The correct order of electron affinity is-

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Important Questions on Classification of Elements and Periodicity in Properties

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electron Gain Enthalpy and its Applications

The species

A r, K^{+}

and

C a^{2 +}

contain the same number of electrons. In which order do their radii increase?

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electron Gain Enthalpy and its Applications

The correct order of atomic radii is:

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electron Gain Enthalpy and its Applications

The absolute value of the electron gain enthalpy of halogens satisfies:

MEDIUM

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electron Gain Enthalpy and its Applications

The correct order of first electron affinity of

O, S

and

Se

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electron Gain Enthalpy and its Applications

The first ionisation potential of Na is 5.1 eV. The value of electron gain enthalpy of Na ⁺ will be :

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electron Gain Enthalpy and its Applications

The element with maximum bond-energy

MEDIUM

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electron Gain Enthalpy and its Applications

The first electron affinity of

C, N

and

O

will be of the order

MEDIUM

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electron Gain Enthalpy and its Applications

In which of the following options the order of arrangement does not agree with the variation of property indicated against it?

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electron Gain Enthalpy and its Applications

Within each pair of elements

F

and

C l

S

and

S e

, and

Li

and

Na

, respectively, the elements that release more energy upon an electron gain are

MEDIUM

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electron Gain Enthalpy and its Applications

Which of the following reactions does not involve absorption of energy?

I. $O (g) + e^{-} ⟶ O^{-} (g)$

II. $S (g) + e^{-} ⟶ S^{-} (g)$

III. $O^{-} (g) + e^{-} ⟶ O^{2 -} (g)$

IV. $Cl (g) + e^{-} ⟶ {Cl}^{-} (g)$

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electron Gain Enthalpy and its Applications

What is the correct oder of electron gain enthalpy of $Cl, F, Te, Po$

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electron Gain Enthalpy and its Applications

Identify the element that forms amphoteric oxide:

HARD

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electron Gain Enthalpy and its Applications

In which of the following pairs, electron gain enthalpies of constituent elements are nearly the same or identical?

(A) $Rb$ and $Cs$

(B) $Na$ and $K$

(D) $I$ and $At$

Choose the correct answer from the options given below:

MEDIUM

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electron Gain Enthalpy and its Applications

Which of the following represents the correct order of increasing electron gain enthalpy with negative sign for the elements?
a. Nitrogen
b. Phosphorous
c. Chlorine
d. Fluorine

MEDIUM

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electron Gain Enthalpy and its Applications

The ionic radii

(in Å)

N^{3 -}, O^{2 -}

and

F^{-}

are respectively:

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electron Gain Enthalpy and its Applications

The first ionization enthalpies for three elements are

1314, 1680

and

2080 kJ {mol}^{- 1}

, respectively. The correct sequence of the element is:

MEDIUM

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electron Gain Enthalpy and its Applications

Which of the following represents the correct order of increasing first ionization enthalpy for

Ca, Ba, S, Se and Ar

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electron Gain Enthalpy and its Applications

Which of the following elements has the most negative electron gain enthalpy?

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electron Gain Enthalpy and its Applications

When the first electron gain enthalpy

({ΔH}_{eg})

of oxygen is

- 141 kJ / mol

, its second electron gain enthalpy is:

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electron Gain Enthalpy and its Applications

The first ionization enthalpies of

Be, B, N

and

O

follow the order

The correct order of electron affinity is-

Important Questions on Classification of Elements and Periodicity in Properties

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