Question 
Each proton has a charge of +1
Each eleclron
[
-1
]
" ne utron
total charge=
[
148
]
[
begin{array}{c}
=17 times 1+18 times 0+18 times 0
=17-15=-1
end{array}
] 
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19 (3) 36 An atom contains 17 proton, 18 neutron and 18 electrons then it has charge - 122-2 11
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