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Which of the following are the correct s...

Which of the following are the correct statements?

A

All the actinide elements are radioactive

B

Alkali and alkaline earth metals are s-block element

C

Chalcogens and halogens are p-block elements

D

The first member of the lanthanide series is lanthanum

Text Solution

Verified by Experts

The correct Answer is:
A, B, C
All the actinide elements are radioactive
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