Match the following elements, given as hints to their first, second ionization enthalpies and electron gain enthalpies. List- I List- II i ) Most reactive non-metal A ) ∆ H 1 = 419 , ∆ H 2 = 3051 , ∆ Eg H = - 48 ii ) Most reactive metal B ) ∆ H 1 = 1681 , ∆ H 2 = 3374 , ∆ Eg H = - 328 iii ) Least reactive element C ) ∆ H 1 = 738 , ∆ H 2 = 1451 , ∆ Eg H = - 40 iv ) Metal forming binary halide D ) ∆ H 1 = 3272 , ∆ H 2 = 5251 , ∆ Eg H = + 48

( i - B ) , ( i i - A ) , ( i i i - D ) , ( i v - C )

( i - A ) , ( i i - B ) , ( i i i - D ) , ( i v - C )

( i - B ) , ( i i - A ) , ( i i i - C ) , ( i v - D )

( i - B ) , ( i i - D ) , ( i i i - A ) , ( i v - C )

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The first ionisation potential (eV) of Be and B respectively are

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Important Questions on Classification of Elements and Periodicity in Properties

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

The electronic configuration of an element with the largest difference between the

1^{s t}

and

2^{n d}

ionization energies is

MEDIUM

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

The element having the greatest difference between its first and second ionization energies, is

MEDIUM

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

The first ionization energy (in

k J / m o l

) of

N a, M g, A l

and

S i

respectively are:

MEDIUM

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

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

Ca, Ba, S, Se and Ar

MEDIUM

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

For the second period elements the correct increasing order of first ionization enthalpy is:

EASY

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

Which of the following atoms has the highest first ionization energy?

MEDIUM

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

Calculate the energy needed to convert three moles of sodium atoms in the gaseous state into sodium ions. The ionization energy of sodium is

495 kJ {mol}^{- 1}

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Ionization 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:

EASY

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

Which element has the highest first ionization potential?

EASY

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

The first ionization enthalpy of the following elements are in the order:

EASY

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

Identify the element that forms amphoteric oxide:

EASY

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

The five successive ionization enthalpies of an element are

800, 2427, 3658, 35024 32824 kJ {mol}^{- 1}

. The number of valence electrons in the element is:

EASY

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

The correct order of atomic radii is:

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

The process that is NOT endothermic in nature is :

MEDIUM

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

In second period of the long form of periodic table, identify the pair of elements which have exceptionally high ionisation enthalpies than expected

MEDIUM

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

Match the following elements, given as hints to their first, second ionization enthalpies and
electron gain enthalpies.

List- $I$	List- $II$
$i)$ Most reactive non-metal	$A)$ $∆ H_{1} = 419, ∆ H_{2} = 3051, ∆_{Eg} H = - 48$
$ii)$ Most reactive metal	$B)$ $∆ H_{1} = 1681, ∆ H_{2} = 3374, ∆_{Eg} H = - 328$
$iii)$ Least reactive element	$C)$ $∆ H_{1} = 738, ∆ H_{2} = 1451, ∆_{Eg} H = - 40$
$iv)$ Metal forming binary halide	$D)$ $∆ H_{1} = 3272, ∆ H_{2} = 5251, ∆_{Eg} H = + 48$

EASY

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

The electronic configuration with the highest ionization enthalpy is:

MEDIUM

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

The first ionization enthalpies of

Be, B, N

and

O

follow the order

The first ionisation potential (eV) of Be and B respectively are

Important Questions on Classification of Elements and Periodicity in Properties

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