Question

What is the bond polarity of $H_{2}S$ ?

Answer 1

Hint :The electronegativities of the atoms or molecules determine the bond or molecular polarities. The polar covalent bond is a form of covalent bond that occurs when two non-identical atoms come together. The shared electrons are equidistant from both atomic nuclei and create non-polar covalent connections between atoms of the same kind. Polar covalent bonds (both positive and negative poles) are charged, whereas non-polar covalent bonds are not.

Complete Step By Step Answer:
The compound hydrogen sulphide has the chemical formula $H_{2}S$ . Hydrogen sulphide is a covalent molecule made up of two hydrogen atoms bound to a sulphur atom in the middle. Hydrogen sulphide, like water ( $H_{2}O$ ), is a hydrogen chalcogenide, which is a chemical made up of hydrogen and a group 16 element (oxygen, sulphur, selenium, and tellurium).
The electronegative value of hydrogen is $2.1$ , while the electronegative value of sulphur is $2.5$ . $H-S$ bonds are characterised as non-polar since the difference between these two values is smaller than $0.5$ . The entire molecule of hydrogen sulphide is nonpolar because it is made up entirely of non-polar $H-S$ bonds. Despite its asymmetrical molecular shape, the molecule as a whole is non-polar due to the lack of polar links.

Note :
The different types of covalent bonding are mostly determined by electronegativity. An atom's tendency to draw a shared pair of electrons towards itself is known as electronegativity. It doesn't have any units because it's only a tendency. A polar covalent bond is a covalent link formed between two atoms in a molecule with an electronegativity difference.