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4. STRUCTURE OF THE ATOM
medium
find out the mass number of oxygen and sulphur atom.
A
$16$ and $32$
B
$18$ and $36$
C
$20$ and $38$
D
$32$ and $64$
Solution
Mass number of oxygen $=$ Number of protons $+$ Number of neutrons
$= 8 + 8$
$= 16$
Mass number of sulphur $=$ Number of protons $+$ Number of neutrons
$= 16 +16$
$= 32$
Std 9
Science
