Answer:
Q5: 9; Q6: 13
Step-by-step explanation:
Question 5.
The atomic mass is the number of protons plus the number of neutrons.
A = p + n
A= 4 + 5
A = 9
Question 6
In a neutral atom, the number of protons equals the number of electrons.
p = e
p = 13, so
e = 13
