Q. 145.0( 3 Votes )

The electronic configurations of three elements, A, B and C are given below. Answer the questions 14 to 17 on the basis of these configurations.

A 1s2 2s2 2p6

B 1s2 2s2 2p6 3s2 3p3

C 1s2 2s2 2p6 3s2 3p5

Stable form of A may be represented by the formula :

A. A

B. A2

C. A3

D. A4

Answer :

The last orbital of the element A has completed octet (i.e. 8 electrons in the last energy shell (orbital s and p)) so it is in a stable state.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Interactive Quiz on Silicons & SilicatesFREE Class
Chemical Bonding (Lecture 5)47 mins
Interactive Quiz on chemical bonding24 mins
Interactive Quiz on Hybridisation & Molecular shape56 mins
Interactive Quiz on Concepts of Hybridization54 mins
Interactive Quiz on Ionic Bond & Fajans Rule52 mins
Chemical Bonding (Lecture 7)FREE Class
Rapid Revision - Chemical BondingFREE Class
Lewis Dot Structure & Formal Charge42 mins
Check Your progress Part 2| Interactive Quiz: Chemical Bonding42 mins
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
view all courses