Question

atomic numbers of elements p,q,r and s are 1,2,7 and 11 respectively.classify them as metals, nonmetals and noble gases​

Answer 1

given:

atomic number of P=12

atomic number of q=13

atomic number of R=14

atomic number of S=15

to find:

1. valency if Q=?
2. classify this element metals and non-metal
3. which of the elements will from most badic oxide

Solutions:

from given atom number the elements indefinte are

• P= magenusum
• Q=aluminum
• R=sillicon
• S=phosphorus

valaency of elements Q

• from the atomic number ofQ, is indefinted as aluminum
• as atomic number of 13,its electron distribution part 2,8,3

Answer 2

Answer:

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