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

An element ‘X’ has mass number = 27. If the number of electrons is given as 13, the number of neutrons will be _____.


A

13

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

14

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

15

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

16

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

The correct option is B

14



Mass number = No. of protons + No. of neutrons
Since an atom is neutral, no. of protons = no. of electrons, which is necessary for charge balance.

Given, the number of electrons = 13. Therefore, the number of protons is 13.
So, number of neutrons will be 27 – 13 = 14


flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Introduction
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon