Q. 75.0( 2 Votes )

Consider two elem

Answer :

(i) Atomic no. of A = 17

Electronic configuration of A = 2, 8, 7


Since it has '7' electrons in its outermost shell.


So, group to which A belongs = 10 +7 = group 17.


Period to which element A belongs = no. of shells = 3


So, period to which A belongs is 3rd


Atomic no. of B = 19


Electronic configuration of A = 2, 8, 8,1


Since it has '1' electrons in its outermost shell.


So, group to which B belongs = group 1.


Period to which element B belongs = no. of shells = 4


So, period to which B belongs is 4th


(ii) Since, Valency of A = -1


Valency of B = +1



So, when A combines with B, the formula will be BA


(iii) The electron dot structure is as follows:


diag.png


The bond formed between B and A is an ionic bond.


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
RELATED QUESTIONS :

Elements have beeXam idea - Science

In Mendeleev&rsquXam idea - Science

Three elements B,All In One Science

(a) The modern peScience - Board Papers

<span lang="EN-USScience - Board Papers

What were the limLakhmir Singh & Manjit Kaur - Chemistry

Would you place tLakhmir Singh & Manjit Kaur - Chemistry

Name two elementsLakhmir Singh & Manjit Kaur - Chemistry

The correct formuLakhmir Singh & Manjit Kaur - Chemistry