Match List - I with List - II LIST-I (Atomic number) LIST-II (Block of periodic table) (A) 37 I. p -block (B) 78 II. d -block (C) 52 III. f -block (D) 65 IV. s -block Choose the correct answer from the options given below:

Question

Match List - I with List - II LIST-I (Atomic number) LIST-II (Block of periodic table) (A) 37 I. p -block (B) 78 II. d -block (C) 52 III. f -block (D) 65 IV. s -block Choose the correct answer from the options given below:, A - II, B - IV, C - I, D - III, A - I, B - III, C - IV, D - II, A - IV, B - III, C - II, D - I, A - IV, B - II, C - I, D - III

MARKS App · Accepted Answer

The orbital where the last electron enters defines the block in the periodic table where the elements belong to: Atomic number Block Electronic Configuration 37 K s -block [ Ar ] 4 s 1 78 Pt d -block [ Xe ] 4 f 14 5 d 9 6 s 1 52 Te p -block [ Kr ] 4 d 10 5 s 2 5 p 4 65 Tb f -block [ Xe ] 4 f 9 6 s 2

Atomic number	Block	Electronic Configuration
$37 (K)$	$s$ -block	$[Ar] 4 s^{1}$
$78 (Pt)$	$d$ -block	$[Xe] 4 f^{14} 5 d^{9} 6 s^{1}$
$52 (Te)$	$p$ -block	$[Kr] 4 d^{10} 5 s^{2} 5 p^{4}$
$65 (Tb)$	$f$ -block	$[Xe] 4 f^{9} 6 s^{2}$

Search any question & find its solution

Looking for more such questions to practice?

LIST-I (Atomic number)		LIST-II (Block of periodic table)
(A)	$37$	I.	$p$ -block
(B)	$78$	II.	$d$ -block
(C)	$52$	III.	$f$ -block
(D)	$65$	IV.	$s$ -block