Column-I
(Electronic configuration of element)

Column-II
(Correct description)

(a) $1 s^{1}, 2 s^{2} 2 p^{2}, 3 s^{1}$ (p) s or p block element
(b) $1 s^{2}, 2 s^{2} 2 p^{6}, 3 s^{2} 3 p^{1}$ (q) III period element
(c) $1 s^{2}, 2 s^{2} 2 p^{6}, 3 s^{2} 3 p^{6} 3 d^{5}, 4 s^{1}$ (r) Group number VI in the long form periodic table
(d) $1 s^{2}, 2 s^{1} 2 p^{3}, 3 s^{1} 3 p^{3}, 4 s^{1}$ (s) d-block element
Valence shell electron $\geq 3$

see full answer

High-Paying Jobs That Even AI Can’t Replace — Through JEE/NEET

🎯 Hear from the experts why preparing for JEE/NEET today sets you up for future-proof, high-income careers tomorrow.

An Intiative by Sri Chaitanya

(a-r, s), (b-q, s, t), (c-r, p, t), (d-r, q)

(a-p, t), (b-p, q, t), (c-r, s, t), (d-p, q)

(a-p, q), (b-s, r, t), (c-r, q, s), (d-t, q)

(a-r, q), (b-s, p, t), (c-r, p, q), (d-s, q)

answer is A.

(Unlock A.I Detailed Solution for FREE)

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

$(a) \to Element is carbon \to p -block$

$\to Valence electron = 4$

$(b) \to Element is aluminium \to p -block$

$\to III period element$

$\to Valence electron = 3$

$(c) \to Element is chromium \to d -block$

$\to Valence electron = 6$

$\to Group number 6 in the$

$long form of periodic table$

$(d) \to Element is sodium \to S -block$ $\to III period$

Watch 3-min video & get full concept clarity

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Column-I (Electronic configuration of element)		Column-II (Correct description)
(a)	$1 s^{1}, 2 s^{2} 2 p^{2}, 3 s^{1}$	(p)	s or p block element
(b)	$1 s^{2}, 2 s^{2} 2 p^{6}, 3 s^{2} 3 p^{1}$	(q)	III period element
(c)	$1 s^{2}, 2 s^{2} 2 p^{6}, 3 s^{2} 3 p^{6} 3 d^{5}, 4 s^{1}$	(r)	Group number VI in the long form periodic table
(d)	$1 s^{2}, 2 s^{1} 2 p^{3}, 3 s^{1} 3 p^{3}, 4 s^{1}$	(s)	d-block element
			Valence shell electron $\geq 3$