Question

The most abundant metal ion present in the human body is:
A) $Z{n^{2 + }}$
B) $C{a^{2 + }} $
C) $N{a^{2 + }} $
D) $F{e^{2 + }} $

Answer 1

Hint: There are metal ions that play a biological role in the human body. Our human body has a very complex structure and has fluids moving all throughout that carry out their respective functions.

Complete answer:
Our body is a composition of a lot of metal ions. All the metal ions are present in the human body and lack of any of these metal ions cause deficiencies and diseases that can be cured by fulfilling the adequate amount of that metal ion required by the body. Let us now discuss which metal ion is present in abundance in the human body.
$C{a^{2 + }}$ are concentrated in the body fluids outside the cell, in much the same way that concentrates inside the cell and outside. $C{a^{2 + }}$ is important in bones and teeth apatite and on the enamel on teeth as fluorapatite. $C{a^{2 + }}$ ions are important in blood clotting and are required to trigger the contraction of muscles and to maintain the regular beating of the heart. $M{g^{2 + }}$ ion is important in chlorophyll, in green parts of the plants and are essential for transmission of impulses along nerve fibres.
Hence we can conclude that the most abundant metal ion present in the human body is $C{a^{2 + }}$.

Therefore the correct option is B.

Note: We clearly know that our skeleton is a structure of bones that are composed of calcium. Hence it is the most abundant metal ion present in the human body. We generally drink milk to fulfill the calcium deficiency if it occurs.