Q. 245.0( 4 Votes )

The position of t

Answer :

(a) Element A is lying in group VII and so, it will have 7 electrons in its outermost shell. A needs one more electron to obtain inert gas configuration and by gaining one electron it will form a monovalent negative ion. Therefore, A is a non-metal.

(b) Since C belongs to period 3 and has three shells while element A is in period 2 and will have only two shells therefore, element C will have large atomic size than element A.

(c) Since element B lies in group 1 and therefore it has 1 valence electron in its shell. It requires one more electron to get stable gas configuration. So its valency is 1.

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
view all courses

Account for the fXam idea - Science

Why are isotopes Xam idea - Science

The electronic coXam idea - Science

Na, Mg and Al areXam idea - Science

Name the elementsAll In One Science

Arrange the folloAll In One Science

Upto which elemenAll In One Science