The number of electrons,protons and neutrons | vedclass

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Question

(A) The atomic number $(Z)$ is equal to the number of protons $= 16$. The element with atomic number $16$ is sulphur $(S)$.Atomic mass number $(A) =$

Vedclass · Accepted Answer

$_{16}^{32} S^{2-}$

Vedclass · Answer

(A) The atomic number $(Z)$ is equal to the number of protons $= 16$. The element with atomic number $16$ is sulphur $(S)$.Atomic mass number $(A) =$ number of protons $+$ number of neutrons $= 16 + 16 = 32$.The species is not neutral because the number of protons $(16)$ is not equal to the number of electrons $(18)$.Since the number of electrons is greater than the number of protons,it is an anion (negatively charged) with a charge equal to the excess electrons $= 18 - 16 = 2$.Therefore,the symbol is $_{16}^{32} S^{2-}$.

The number of electrons,protons and neutrons in a species are equal to $18$,$16$ and $16$ respectively. Assign the proper symbol to the species.

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