Outermost electronic configuration of a group 13 element, E, is 4 s ^ 2 , 4 p ^ 1 . The electronic configuration of an element of p-block period-five placed diagonally to element, E is:

Correct answer: D. [ Kr ] 4 d ^ 10 5 s ^ 2 5 p ^ 2 The element E is Ga and the diagonal element of 5 ^ th period is Sn 50 having outer electronic configuration will be [ Kr ] 5 s ^ 2 4 d ^ 10 5 p ^ 2 .

JEE Main 202120 JulyEvening Shift

Exam: JEE Main
Year: 2021
Date: 20 July
Shift: Evening Shift
Subject: Chemistry
Chapter: Structure of Atom

JEE Main 2021 · 20 July · Evening Shift · Chemistry · Structure of Atom

Outermost electronic configuration of a group 13 element, E, is 4 s...

Outermost electronic configuration of a group

13

element,

E,

4{s}^{2}, 4{p}^{1} .

The electronic configuration of an element of p-block period-five placed diagonally to element,

E

is:

Options

A $[ Kr ] 3{d}^{10}4{s}^{2}4{p}^{2}$
B $[ Ar ] 3{d}^{10}4{s}^{2}4{p}^{2}$
C $[ Xe ] 5{d}^{10}6{s}^{2}6{p}^{2}$
D $[ Kr ] 4{d}^{10}5{s}^{2}5{p}^{2}$

Correct answer

D. $[ Kr ] 4{d}^{10}5{s}^{2}5{p}^{2}$

Step-by-step solution

The element

E

Ga

and the diagonal element of

{5}^{\text{th}}

period is

Sn 50

having outer electronic configuration will be

[ Kr ] 5{s}^{2}4{d}^{10}5{p}^{2} .

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