Which of the following atoms has a full outer shell?
A. Ca
B. Li-1
C. Mg+2
D. N-2

*will mark you brainliest + 15 points ** why does the equilibrium of a system shift when the pressure is increased? a. to maximize the stress on the system b. to stop restoring equilibrium to the system c. to increase the total moles of gas in the system d. to decrease the total moles of gas in the system

How many atoms are there in 5.70 mol of mg

Name the element in group 17, period 2. (periodic table)