Question

element P Q R and S have atomic number 11 12 17 and 18 respectively which of them are metal which of them are metal ?​

Answer 1

The elements are:

P= Sodium

Q= Magnesium

R= Chlorine

S= Argon

Among these Sodium and Magnesium are metals and Chlorine and Argon are non metals.

#answerwithquality #BAL

Answer 2

Answer:

metals are - p and Q

R is non metal

Explanation:

extra knowledge.

the elements which have 1,2,3 electrons in the valence shell are metals

and the elements with ,4,5,6,7 electrons in the valence shell are non metals