\( \mathrm{A} \) and \( \mathrm{B} \) are two elements which have s... VIDEO
\( \mathrm{A} \) and \( \mathrm{B} \) are two elements which have same atomic weight and are having atomic number 27 and 30
\( \mathrm{P} \)
respectively. If the atomic weight of \( \mathrm{A} \) is 57 then
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number of neutrons in \( \mathrm{B} \) is
(1) 27
(2) 33
(3) 30
(4) 40
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