Question

The first ionization enthalpy of the elements are in the order of

• A. C < N< Si <P
• B. N < Si < C <P
• C. Si < P < C < N
• D. P < Si < N < C

Answer 1

Answer: (C)

Si < P < C < N

Answer 2

: Ionisation energy increases as we move from left to right in a period.