1.

The number of atoms in 4.25 g of \[N{{H}_{3}}\]is approximately [CBSE PMT 1999; MH CET 2003]

A.        \[1\times {{10}^{23}}\]    
B.        \[2\times {{10}^{23}}\]
C.        \[4\times {{10}^{23}}\]    
D.        \[6\times {{10}^{23}}\]
Answer» E.


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