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 ,…

Question

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

Aicharya · Accepted Answer

Most reactive non-metal is B as it has highest negative electron gain enthalpy. Most reactive metal is A as it has the least first ionization enthalpy. The least reactive element is D as it has high ionization energy and positive electron gain enthalpy. Metal forming binary halide is C as it has comparable successive ionization energy.

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

Solution