Question

Two elements P and Q belong to the 3rd period of the modern periodic table and are in

Group-1 and Group -2 respectively. Compare their following characteristics in tabular

form

i. The number of electrons in their atom

ii. The size of their atoms

iii. The metallic characters

iv. Their tendencies to loose electrons

v. The formula of their oxides

vi. The formula of their halides​

Answer 1

Explanation:

third 3rd period group 1 group 2 elements are sodium magnesium

now,1. number of electron of sodium is 11

India number of electron of magnesium is 12

2.the size of magnesium is greater than the size of of sodium

3.both element has metallic character

4. sodium lose one electron and magnesium lose two electron

5.the formula of their oxide that means sodium oxide equal to Na2O

and the formula of magnesium oxide is MgO

6. MgH2 and NaH

Answer 2

Answer:

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