Question

plz tell me neat and correct answer and also tell reason.

Answer 1

Hydrogen should be placed in 1 of alkali metals bcoz hydrogen has the atomic number 1

Answer 2

Group 1 because H2 is the first element of the periodic table and even though it shows resemblance to halogens, it should be placed in group 1 for the above reason

kalyaniprasad8

Resemblance to halogens:-

1. Both are diatomic gases(CL2 F2 H2)

2. Both can form anion by gaining an electron

3. Both are non metals

4. Both are monovalent.