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

#1

Subtract no of electrons from no of protons

Ion A has -2 charge

#2

No of protons=6

No of electrons=6

indicate valleys, hills, steepness and gentleness of slopes.

explanation:

contour lines on a map indicate elevation, or depth. numeric notations on contour lines refer to the level of elevation, or height about sea level.