Question

(b) Explain the ionization energy order in the following sets of elements:
a) Na, Al, Cl
b) Li, Be, B
c) C, N, O
d) F, Ne, Na
e) Be, Mg, Ca.

Answer 1

Answer:

in periodic table from left to right ionization energy decreases

so,

option c is your answer

Answer 2

Dear Student,

◆ Answer -

Elements of each group are arranged in ascending order of their ionization enthalpies.

a) Na, Al, Cl

Na < Al < Cl

b) Li, Be, B

B < Li < Be

c) C, N, O

O < C < N

d) F, Ne, Na

Na < F < Ne

e) Be, Mg, Ca

Ca < Mg < Be

◆ Ionisation enthalpy -

• It is the minimum amount of energy required to remove the valence electron of an isolated neutral gaseous atom or molecule.

# Trend in ionization enthalpy -

Usually ionization enthalpy

• increases from left to right in a period
• decreases from top to bottom in a group

Thanks dear. Hope this helps you...