Question

8. Valency various from _
to_
9. Zymase help in the fermentation of _in alcohol.​

Answer 1

1. Valency increases from 1 to 4 and then reduces to zero when we move from left to right across a period. Number of valence electrons increases from 1 to 8 when we move from left to right across a period.

2. Zymase is an enzyme complex that catalyzes the fermentation of sugar into ethanol and carbon dioxide.