For each ionic compound formula, identify the main group to which X belongs: (a) XF2;

1 answer:

8 0

(a) For the compound XF₂, X must be a metal. As fluorine is monovalent and there are two fluorine atoms, so the valency of X must be two.

Therefore, X belongs to group 2.

A metallic compound is a compound that contains one or more metal elements bonded to another element.

The elements are bonded with the help of metallic bonds.

Monovalent compounds are compounds which consist of an atom which has only a single covalent bond.

The covalent bond is defined as an interatomic linkage formed by sharing the electronic pair between two atoms.

Valency is the combining power of an element. It helps with bond formation.

To know more about Bond formation, refer to this link:

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Which compound contains both covalent and ionic bonds? <br> a. NCl3 b. NaF c. HCN d. NH4OH

Marina86 [1]

<h2> $NH_4OH$ contains both covalent and ionic bonds.</h2>

Explanation:

A covalent bond is formed when an element shares its valence electron with another element. This bond is formed between two non metals.

An ionic bond is formed when an element completely transfers its valence electron to another element. The element which donates the electron is known as electropositive element or the metal and the element which accepts the electrons is known as electronegative element or non metal.

a. $NCl_3$ contain covalent bonds as they are made up of non metals only.