The set representing the correct order of first ionisation potential is :

K > N a > L i

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B e > M g > C a

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

B > C > N

No worries! We‘ve got your back. Try BYJU‘S free classes today!

G e > S i > C

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B $B e > M g > C a$
Size increases as we move down the group. Therefore, the outer electrons experience less attraction due to increase in distance, i.e., the effective nuclear charge experienced is less. Less the effective nuclear charge less the I.P. Therefore, I.P of $B e > M g > C a$ .

Suggest Corrections

Similar questions

Arrange the following as per instructions given in the brackets.

(a) Mg. Cl, Na, S, Si (decreasing order of atomic size)

(b) Cs, Na, Li, K, Rb (increasing metallic character)

(d) Cl, F, Br, I (increasing electron affinity)

(e) Cs, Na, Li, K, Rb (decreasing electronegativity)

N a, M g, A l

S i

Join BYJU'S Learning Program