5. What is the name of the molecular compound PCI?

A pentaphosphorous monochloride

OB phosphorous pentachloride

OC monophosphorous tetrachloride

OD diphosphorous trichloride

B. phosphorous pentachloride

Explanation:

When phosphorus react with chlorine atom, phosphorus trichloride and phosphorus pentachloride are formed. There are 5 electrons are present in the outermost shell of phosphorous which make ionic bonds by losing all 5 electrons and recieves by 5 chlorine atoms. Phosphorous pentachloride is used in making of many products such as pesticides and water treatment chemicals. It is also used in the manufacturing of paints.