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 )

EASY

Earn 100

Name the following:

The minimum amount of energy required to remove valence shell electron from a neutral isolated gaseous atom of an element.

Important Questions on Classification of Elements and Periodicity in Properties

MEDIUM

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Periodic Trends in the Properties of Elements

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>Periodic Trends in the Properties of Elements

Give a reason for the following.

Ionisation potential increases across a period, from left to right.

MEDIUM

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Periodic Trends in the Properties of Elements

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>Periodic Trends in the Properties of Elements

The process that is NOT endothermic in nature is :

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Periodic Trends in the Properties of Elements

Which element has the highest first ionization potential?

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Periodic Trends in the Properties of Elements

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:

MEDIUM

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Periodic Trends in the Properties of Elements

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>Periodic Trends in the Properties of Elements

Arrange the following in the correct order of their ionization enthalpies:

$Li, Be, B, N, O$

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Periodic Trends in the Properties of Elements

The electronic configuration with the highest ionization enthalpy is:

EASY

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Periodic Trends in the Properties of Elements

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>Periodic Trends in the Properties of Elements

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}

MEDIUM

Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Periodic Trends in the Properties of Elements

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>Periodic Trends in the Properties of Elements

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	$D)$ $∆ H_{1} = 3272, ∆ H_{2} = 5251, ∆_{Eg} H = + 48$