Chemistry, asked by AksharaSundaresh, 4 months ago

find the group no of the element having atomic no. 21

Answers

Answered by kishore71718

1

Answer:

Atomic number 21 is Scandium and it is in the group Transition metals (3-12) group

Answered by srivarunbittu

1

Explanation:

Scandium

3rd group

1s2 2s2 2p6 3s2 3p6 4s2 3d1

no. of valence electron is 1

belongs to 3rd group

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