Question

True/False

correct answer brillianist​

Answer 1

Answer:

False

False

Explanation:

Hope it helps!!

Answer 2

Answer:

6. true

7. false

Explanation:

6. The valency of SO4 ion is -2 and that of H is +1( in this case ).

So, H2SO4 has a total valency of 0 as

(total valency of H+ ion) + (total valency of SO4(-2) ion)

=> 2(+1) + (-2) = 0

Therefore, H2SO4 is a stable compound( as it has a valency of 0, so it doesn't want to accept/donate any electrons )

7. The periodic table has 18 groups- the alkaline metals(1st), alkaline earth metals(2nd), the transition elements(3-12), semimetals and nonmetals(13-17), the halogens(17th, they are non metals too) and the noble gases(18th)