Which one of the following is an s - block element [MP PMT 1999]

1.	Which one of the following is an s - block element [MP PMT 1999]
A.	Aluminium
B.	Chromium
C.	Niobium
D.	Potassium
Answer» E.

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Which one of the following is an s - block element [MP PMT 1999]

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