Explore a diverse range of topics and get answers from knowledgeable individuals on IDNLearn.com. Ask anything and receive immediate, well-informed answers from our dedicated community of experts.

19.B is the chemical symbol of which element?

Boron
Boring
Balkite
Beryllium

20.Zinc (Zn) has an atomic number of 30 and an atomic mass of 65. How many neutrons does a stable atom of Zn have?

30
35
60
95