CameraIcon

SearchIcon

MyQuestionIcon

2

You visited us 2 times! Enjoying our articles? Unlock Full Access!

Head Elements (Group 1)

Which element...

Question

Which element has valency equal to its group number?

A

Sodium

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

B

aluminium

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

C

oxygen

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

D

carbon

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

Open in App

Solution

The correct option is A Sodium
Sodium having atomic number 11, its electronic configuration is $(N a) 11 - 1 s_{2} 2 s_{2} 2 p_{6} 3 s_{1}$
therefore sodium contains one valence electron and having group no. first.

Suggest Corrections

thumbs-up

0

Similar questions

Q. An element A has atomic number 20 :
a) Write the electronic configuration.
b) To which group and period does it belong?
c) What is its valency?

Q. If an element has valency 2 then the group of Modern Periodic Table to which this element belongs is

M^{3 +}

contains 10 electrons and 14 neutrons Element M has valency equal to the valency of another element X which has five electrons less than Ar in its outermost shell Identify the elements M and X.

Q. Elements in the same group have equal valency. Comment on it.

Q. An element X has two electrons in its valence shell without any core electrons. Identify the group to which it belongs.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Introduction to s Block Elements

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Head Elements (Group 1)

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon