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.

air quality

poor drinking water

and heavy polution

can lead to poor health

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.