The elements Q,R and T have mass number 40.their atoms contains 22,21,20 neutrons.respectively represent their atomic composition with appropriat symbol
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Atomic Composition of Element Q:
No. of neutrons = 22
No. of protons = (40-22) = 18
No. of electrons = 18
No. of shells = 3
Atomic Composition of Element R:
No. of neutrons = 21
No. of protons = (40-21) = 19
No. of electrons = 19
No. of shells = 4
Atomic Composition of Element T:
No. of neutrons = 20
No. of protons = (40-20) = 20
No. of electrons = 20
No. of shells = 4
I hope this helps.
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