Question

27. The correct sequence representing first ionization energies (in ev) of IInd period elements is
represented by :
(A) C < B (B) Be < B
(C) O < N (D) N < C
28. The carbide ion [C3
4–], present in Mg2 C3 is isoelectronic with :
(A) C2N2 (B) CO2
(C) C2
2– (D) CN¯​

Answer 1

Hey brainly user

Here is your answer

27) option b

28)Option d

If you liked my answer then don't forgot to mark as brainliest answer