Match the atomic number 2,4,8,15, and 19 with each of the followin

1.	Match the atomic number 2,4,8,15, and 19 with each of the following:A solid non metal belonging to the third period.
Answer» A solid non metal belonging to the third period with atomic number of 15 is phosphorus with symbol P. A metal of valency 1 is potassium with symbol K. Its atomic number is 19 and is an alkali metal. A gaseous element with valency 2 is helium. Its symbol is He and atomic number is 2. It is an inert gas. An element belonging to Group 2 (alkaline earth metals) is beryllium (Be). It has atomic number of 4. A rare gas (or inert gas) is helium. Its symbol is He and atomic number is 2. Its valency is 2.

Match the atomic number 2,4,8,15, and 19 with each of the following:A solid non metal belonging to the third period.

Answer»

A solid non metal belonging to the third period with atomic number of 15 is phosphorus with symbol P.

A metal of valency 1 is potassium with symbol K. Its atomic number is 19 and is an alkali metal.

A gaseous element with valency 2 is helium. Its symbol is He and atomic number is 2. It is an inert gas.

An element belonging to Group 2 (alkaline earth metals) is beryllium (Be). It has atomic number of 4.

A rare gas (or inert gas) is helium. Its symbol is He and atomic number is 2. Its valency is 2.

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