Question

Which of the following elements would most likely become a positive ion when forming a chemical bond?
A. Sulfur
B. Helium
C. Carbon
D. Calcium

Answer 1

Positive ions are formed by mostly metals.  As a result the answer would be Calcium Ca²⁺

Answer 2

Answer: correct option will D.

Explanation:

Calcium belongs to the group 2 i.e. of alkaline earth metals in periodic table. electronic configuration of calcium is $[Ar]4s^2$.

So in order to attain noble gas configuration calcium will loose its two electrons during chemical bond formation.

$Ca\rightarrow Ca^{2+}+2e^-$

Sulfur is a non metal which forms negatively charged ion so as to complete ts octet during chemical bond formation.

Helium is a noble gas with fully filled electronic configuration.

Carbon forms bond which is covalent in nature.