MCQ
The mass of neutron is nearly
- A${10^{ - 23}}\,kg$
- B${10^{ - 24}}\,kg$
- C${10^{ - 26}}\,kg$
- ✓${10^{ - 27}}\,kg$
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$O ^{2-}, F ^{-}, Al , Mg ^{2+}, Na ^{+}, O ^{+}, Mg , Al ^{3+}, F$
$NO_2^+ \to NO_2 \to NO_2^-$
$C_1$ $C_2$