Q.
If the atomic weight of an element is 12 times that of the lightest element and it has 6 protons, then it contains
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a
6 protons, 6 neutrons,6 electrons
b
6 protons, 12 neutrons,6 electrons
c
6 protons, 6 neutrons,12 electrons
d
6 protons, 12 neutrons,12 electrons
answer is A.
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Detailed Solution
Given, Atomic mass= mass no. (A)=12 times that of the lightest element(H)=12Atomic no.(Z)=6=no. of protons = no. of electrons (Since it is a neutral species)no. of neutrons=A-Z=12-6=6
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