Lanthanide contraction occurs because [AMU 2000; BHU 2003]

1.	Lanthanide contraction occurs because [AMU 2000; BHU 2003]
A.	f-orbital electrons are easily lost
B.	f-orbital an incompletely filled
C.	f-orbital electron an poor shielders of nuclear charge
D.	f-orbital do not come out on the surface of atom and are buried inside
Answer» E.

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Lanthanide contraction occurs because [AMU 2000; BHU 2003]

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