Q.

Regarding samarium correct statements are

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a

Sm exhibits +2 and +3 States

b

It is steel hard

c

All

d

It’s melting point is highest among lanthanides (1623K)

answer is D.

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Detailed Solution

samarium being steel hard. Their melting points range between 1000 to 1200 K but
samarium melts at 1623 K and exhibit +2 and +3

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