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:

Step1: Analyze covalent - bond property

Covalent bonds form between non - metals as non - metals share electrons to achieve a stable electron configuration. Since element Z forms a single covalent bond in a diatomic molecule, it is a non - metal.

Step2: Consider electron - sharing and periodic table location

Non - metals that form single covalent bonds in diatomic molecules often have 7 valence electrons. Elements with 7 valence electrons are in Group 17 (halogens) of the periodic table. They need one more electron to complete their octet, so they share one electron with another atom of the same element to form a diatomic molecule.

Answer:

(a) Non - metal
(b) Group 17 (halogens) of the periodic table. Non - metals with 7 valence electrons form single covalent bonds in diatomic molecules to complete their octet.