Question

# If the atomic weight of an element is $$23$$ times that of the lightest element and it has $$11$$ protons, then it contains:

A
11 protons, 23 neutrons, 11 electrons
B
11 protons, 11 neutrons, 11 electrons
C
11 protons, 12 neutrons, 11 electrons
D
11 protons, 11 neutrons, 23 electrons

Solution

## The correct option is C $$11$$ protons, $$12$$ neutrons, $$11$$ electronsNumber of electron = number of proton  Hence,number of electrons $$=11$$and number of protons $$=11$$The lightest element is hydrogen which has atomic weight 1.Thus, an atomic weight of the element will be 23.number of neutron = mass number - atomic number $$=23-11=12$$ Chemistry

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