Q. 104.8( 6 Votes )

<span lang="EN-US

Answer :

Given: mass of number of X = 35


No. of neutrons = 18


Atomic number of element X = Mass number – no. of neutrons present


Atomic no. = 35 -18 = 17


The electronic configuration of X will be 2, 8, 7


X will belong to group no. 10 + 7= 17th


X will belong to period 3rd as it has three shells.


Since it requires one more electron to get stable gas electron configuration, so the valency is 1.


'X'


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Glimpses of IndiaGlimpses of IndiaGlimpses of India39 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
caricature
view all courses
RELATED QUESTIONS :

Write one main diScience - Board Papers

<span lang="EN-USScience - Board Papers

(a) List three diScience - Board Papers

List three distinScience - Board Papers

<span lang="EN-USScience - Board Papers

Why is DNA copyinScience - Board Papers

What are those orScience - Board Papers