Q. 23 C3.5( 12 Votes )

Which atoms are i

Answer :

[a] [He] 2s1

The electronic configuration of Helium is [He] 2s1 = 1s2 2s1.


Atomic number of the element = 3 [lithium, a p-block element]


[b] [Ne] 3s2 3p3


The electronic configuration of Neon is [Ne] 3s2 3p3 = 1s2 2s2 2p6 3s2 3p3.


Atomic number of the element = 15 [phosphorous, a p block element]


[c] [Ar] 4s2 3d1


The electronic configuration of Argon is given as [Ar] 4s2 3d1 = 1s2 2s2 2p6 3s2 3p6 4s2 3d1.


Atomic number of the element = 21 [scandium, a d block element]


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses