Science, asked by snehachakraborty454, 7 months ago

This questions refer to the elements of periodic table with atomic numbers 3 to 18. Which of them are noble gases? Which of them are halogens? Which of them are alkali metals? Which are the elements with valency 4?

Answers

Answered by 2110

Answer:

noble gases : neon (10), argon (18)

halogens : fluorine (9) , chlorine (17)

alkali metals : lithium (3) , sodium (11)

elements with valency 4 : carbon (6) , silicon (14)

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