Question

Match the following: 

List-1 (Element)	List-2 (Block)
A: Cd	I: f-block
B: Eu	II: s-block
C: Se	III: d-block
D: Ba	IV: p-block

• A. A-IV, B-III, C-II, D-I
• B. A-II, B-IV, C-I, D-III
• C. A-III, B-IV, C-II, D-I
• D. A-III, B-I, C-IV, D-II

Hint:

The block of an element in the periodic table is determined by the subshell (s, p, d, or f) that receives the last electron according to the Aufbau principle. Knowing the general layout of the periodic table (s-block on the left, p-block on the right, d-block in the middle, f-block at the bottom) can help you quickly place many common elements.

Answer 1

The Correct Option is D