Question

Match the atomic numbers of the elements given in coulumn I with the periods given in column II and mark the appropriate choice.

	Column I (Atomic number)		Column II (period)
(A)	31	(i)	5
(B)	50	(ii)	3
(C)	56	(iii)	4
(D)	14	(iv)	6

• A. (A)$\rightarrow$ (i), (B)$\rightarrow$ (ii), (C)$\rightarrow$ (iii), (D)$\rightarrow$ (iv)
• B. (A)$\rightarrow$ (ii), (B)$\rightarrow$ (i), (C)$\rightarrow$ (iv), (D)$\rightarrow$ (iii)
• C. (A)$\rightarrow$ (iii),(B)$\rightarrow$ (iv), (C)$\rightarrow$ (i), (D)$\rightarrow$ (ii)
• D. (A)$\rightarrow$ (iii), (B)$\rightarrow$ (i),(C)$\rightarrow$ (iv), (D)$\rightarrow$ (ii)

Answer 1

Answer: (D)

(A)$\rightarrow$ (iii), (B)$\rightarrow$ (i),(C)$\rightarrow$ (iv), (D)$\rightarrow$ (ii)

Answer 2

: (1) Z = 31 - $4s^{2}4p^{1}$ ( n = 4)

(2) Z = 50 - $5s^{2}5p^{2}$ (n = 5)

(3) Z = 56 - $6s^{2}$ (n = 6 )

(4) Z = 14 - $3s^{2}3p^{2}$ (n = 3)