Question

Unit 2 Atomic Theory. Please help will give as much points as possible.

Answer 1

#1

Subtract no of electrons from no of protons

• A=8-10=-2
• B=9-10=-1
• C=11-10=+1
• D=12-10=+2

Ion A has -2 charge

#2

• Carbon has a atomic mass=12u

No of protons=6

No of electrons=6

• Answer is G