CameraIcon

SearchIcon

MyQuestionIcon

391

You visited us 391 times! Enjoying our articles? Unlock Full Access!

Atomic Number and Mass Number

An atom of an...

Question

An atom of an element has two electrons in the M shell. Identify its atomic number.

A

10

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

B

12

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

C

14

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

D

15

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

Open in App

Solution

The correct option is B 12
For M shell value of $n = 3$ . Thus the electronic configuration is : 2, 8, 2 and atomic number is 12.

Suggest Corrections

thumbs-up

0

Similar questions

Q. An atom of an element has

4^{t h}

shell as the valence shell with an electron pair in it. The number of electrons in

3^{r d}

shell is 2 times more than the number of electrons in

2^{n d}

shell. Identify atomic number.

Q. An atom of an element has one electron in the valence shell and the two inner shells have

8

electrons each. Find the atomic number of that element.

Q. An element has an atomic number

20

. How many electrons will be present in

K, L, M

N

shells of its atom?

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Discovery of Subatomic Particles

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Atomic Number and Mass Number

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon