Question

The elements with atomic numbers 90 to 103 are known as :

a)d-block elements

b)lanthanides

c)actinides

d)transition elements

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Answer 1

Answer:

C)Actinides.

Explanation:

The elements with atomic numbers 90(Thorium)to 103(Lawrencium) are known as Actinides..

Hope this helps you..