f match the atomic number 2, 4, 8, is and is
with each of the following
in a solid non-metal belonging to the third period
Answers
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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Answer:
ELEMENT WITH ATOMIC NUMBER 4
Explanation:
ELEMENT WHOSE ATOMIC NUMBER 4 IS BERRYLIUM (Be) WHICH IS A SOLID NON-METAL.
TIPS:--
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