The electronic configuration of flourine elements respectively are :

a. $1s^2$
b. $1s^{2}2s^{2}2p^2$
c. $1s^{2}2s^{2}2p^5$
d. $1s^{2}2s^{2}2p^4$

Q. Electronic configurations of four elements $A,B,C$ and $D$ are given below:
(A) $1s^{2}2s^{2}2p^6$
(B) $1s^{2}2s^{2}2p^4$
(C) $1s^{2}2s^{2}2p^{6}3s^1$
(D) $1s^{2}2s^{2}2p^5$
Which of the following is the correct order of increasing tendency to gain electron?

Q. The electronic arrangements of four elements i, ii, iii, iv are:
(i) $1s^2$ (ii) $1s^{2}2s^{2}2p^2$ (iii) $1s^{2}2s^{2}2p^5$ (iv) $1s^{2}2s^{2}2p^6$
The tendency to form ionic bond is maximum in:

Q.

Electronic configuration of four elements A, B, C, and D are given below
A. $1s^{2}2s^{2}2p^6$ B. $1s^{2}2s^{2}2p^4$ C. $1s^{2}2s^{2}2p^{6}3s^1$
D. $1s^{2}2s^{2}2p^5$
Whilch of the following is the correct order of increasing tendency to gain electron?
(a) A < C <B <D (b) A < B < C < D (c) D <B < C < A (d) D < A < B <C

Q. The electronic configuration of two neutral elements A and B are $A=1s^{2}2s^{2}2p^{6}3s^1$ and $B=1s^{2}2s^{2}2p^5$. Which type of compound they form?

Q. Electronic configurations of three elements, A, B and C are given below.

A: $1s^{2}2s^{2}2p^6$

B: $1s^{2}2s^{2}2p^{6}3s^{2}3p^3$

C: $1s^{2}2s^{2}2p^{6}3s^{2}3p^5$

The bond between B and C will be