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Choose the correct statement(s) regardin...

Choose the correct statement(s) regarding characteristics of lanthanides :

A

They are silvery white soft metals and tarnish rapidly in air

B

Hardness increases with increasing atomic number, samarium being steel hard

C

They have typical metallic structure and are good conductors of heat and electricity

D

Their M.P. range between 1000 to 1200 K but samarium melts at 1623 K

Text Solution

Verified by Experts

The correct Answer is:
A, B, C, D
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