Question

what would be the name for li⁺?
a lithide
b lithium
c lithium(ii) ion
d lithium ion

Explanation:

In chemistry, when an atom loses an electron to form a cation, for main - group elements like lithium (Li), the name of the ion is simply the name of the element followed by "ion". Lithium has a +1 charge when it forms an ion (Li⁺), and it is called the lithium ion. Lithide refers to a compound with a negatively - charged lithium species. Lithium(II) ion would imply a +2 charge which is not typical for lithium as it has only one valence electron to lose. And just "lithium" refers to the neutral atom.

Answer:

d. lithium ion