Describe with sketches how electrons are shared during covalent bonding for: (a) water (h2o) (b) carbon tetrafluoride (cfa) (c) phosphorus pentafluoride (pfs)

Answer : The sketches of electrons shared during covalent bonding are shown below.

Explanation:

Covalent bond : It is defined as the bond that is formed when sharing of electrons takes place between the atoms.

This is usually formed between two non-metals.

(a) Water

It is a covalent compound in which hydrogen and oxygen are non-metals. The water is formed when two hydrogen atoms share their electrons with oxygen atom.

(b) Carbon tetrafluoride

It is a covalent compound in which carbon and fluorine are non-metals. The carbon tetrafluoride is formed when four fluorine atoms share their electrons with carbon atom.

(c) Phosphorous pentafluoride

It is a covalent compound in which phosphorous and fluorine are non-metals. The phosphorous pentafluoride is formed when five fluorine atoms share their electrons with phosphorous atom.

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)