First slide

Periodic Trends

Question

Among the following, the element with highest magnitude electron gain enthalpy is

Moderate

A

P
B

Si
C

Cl
D

S

Solution

Magnitude of electron gain enthalpy (exothermic) :
N<C<O<F……Nitrogen is a 15^thgroup element…it has stable configuration…lesser value….moreover it has +ve EGE ;
P<Si<S<Cl……Phosphorous is a 15^thgroup element…it has stable configuration…lesser value ;

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