there are 6 moles of oxygen in Zn(No3)2
The correct answer is (A) from 2nd to 3rd shell.
The explanation :
when a gain of energy is the shift of the electrons from a shell of low energy to the shell of high energy
and we have here 2nd shell is the shell of low energy, and 3rd shell is the shell of high energy.
∴ (A) from 2nd to 3rd shell is the correct answer.
It's quite strong and has a weak base . it would probably dissolve and the ph would drop
Answer: True
Explanation: For example, changing direction can change velocity