Calculate the number of protons,neutrons and | vedclass

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Question

(A) An element is represented as ${}_Z^A X$,where:$Z$ is the atomic number (number of protons).$A$ is the mass number (sum of protons and neutrons).Fo

Vedclass · Accepted Answer

$16, 16, 18$

Vedclass · Answer

(A) An element is represented as ${}_Z^A X$,where:$Z$ is the atomic number (number of protons).$A$ is the mass number (sum of protons and neutrons).For ${}_{16}^{32} S^{2-}$:Number of protons $= Z = 16$.Number of neutrons $= A - Z = 32 - 16 = 16$.Since the ion has a charge of $-2$,it has gained $2$ electrons.Number of electrons $= Z + 2 = 16 + 2 = 18$.Thus,the number of protons,neutrons,and electrons are $16, 16, 18$ respectively.The correct option is $A$ (or $D$ as they are identical).

Species	Number of Electrons
$(i) Be^{2+}$	$(a) 0$
$(ii) H^{+}$	$(b) 10$
$(iii) Na^{+}$	$(c) 2$
$(iv) Mg^{+}$	$(d) 11$

Calculate the number of protons,neutrons and electrons in ${}_{16}^{32} S^{2-}$.

Similar Questions

Positive ions are formed from the neutral atom by the

$A$: Atoms with the same mass number but different atomic numbers are called isobars.
$R$: In isobars,the sum of protons and neutrons is always different.

Match the following species with the correct number of electrons present in them:

Species Number of Electrons

$(i) Be^{2+}$ $(a) 0$

$(ii) H^{+}$ $(b) 10$

$(iii) Na^{+}$ $(c) 2$

$(iv) Mg^{+}$ $(d) 11$

An atom has a mass number of $25$ and contains $13$ neutrons in its nucleus. What is the charge of its ion if it forms a stable octet?

The phosphide ion has an electronic structure similar to that of:

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