CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Electronic Configuration

An element is...

Question

An element is represented as $_{20}^{40} X$ . Find the number of valence electrons in it.

A

2

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

B

3

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

C

1

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

D

4

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

Open in App

Solution

The correct option is A
2

The atomic number of X is 20.The electronic configuration of X is 2,8,8,2. So the number of valence electrons in the element is 2.

Suggest Corrections

thumbs-up

0

Similar questions

Q. A _________ dot structure of an element is surrounded by the valence electrons of its atoms represented in the form of dots.

If x denoted the number of valence electrons of a representative element then its valence is equal to:

Q. An atom of an element has one electron in the valence shell. It can be represented as :

Q. A Lewis dot structure of an element is surrounded by the valence electrons of its atoms represented in the form of dots.

Q. Atomic number of an element is 42. Find out the number of electrons present in the valence shell.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Electronic Configuration

Standard X Chemistry

Join BYJU'S Learning Program

CrossIcon