wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

The formula of ion formed by an element A is A+2. The element A can probably belong to which of the following groups?


A

IIIA

No worries! We‘ve got your back. Try BYJU‘S free classes today!
B

VIIA

No worries! We‘ve got your back. Try BYJU‘S free classes today!
C

IIA

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D

IA

No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C

IIA


Explanation for Correct option:

C) Element A belongs to IIA group as it contains 2 valence electrons in its outermost shell and on losing the 2 electrons it becomes A+2 to attain nearest inert gas configuration.

A-2e-A2+

Explanation for Incorrect options:

A)IIIA group element has 3 electrons in the valence shell and on losing 3 electrons, it becomes A3+to attain nearest inert gas configuration.

B)VIIA group element has 7 electrons in the valence shell and they gain 1 electron to attain stability and becomes A- to attain nearest inert gas configuration.

D)IA group element has 1 electron in the valence shell and on losing 1 electron, it becomes A+to attain nearest inert gas configuration.

Hence,C) is the correct option- the element A belongs to IIA group.


flag
Suggest Corrections
thumbs-up
1
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Contraceptive Methods
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon