Question

1. unknown element z exists as a diatomic molecule. in the molecule, the two atoms of z are connected by a single covalent bond. (a) classify the element as a metal or a non - metal. (b) where in the periodic table would you expect to find this element? explain your answer.

Explanation:

(a) Covalent bonds form between non - metal atoms as non - metals share electrons to achieve a stable electron configuration. So, the element is a non - metal.
(b) Non - metals are located on the right side of the periodic table. Diatomic non - metals with single covalent bonds like hydrogen ($H_2$) are often found in groups 1, 14 - 17. Elements form diatomic molecules to gain stability, and non - metals on the right side of the periodic table tend to share electrons in this way.

Answer:

(a) Non - metal
(b) On the right side of the periodic table. Non - metals form covalent bonds and diatomic molecules to gain stability, and elements with such properties are typically in groups 1, 14 - 17.