How many electrons will each ele- ment gain or lose in forming an ion?
a. calcium
c. aluminum
b. fluorine
d. oxygen

Can someone please also explain to me how I will know when wich Element loses or gains electrons?

Explanation:Oxygen- gains 2 electrons to form ionsFluorine- gains 1 electron to form negative ionsAluminum - loses three electrons to form ionsCalcium- loses 2 electrons in order to form ions*Non metals gain electrons to form ions*Metals loses electrons to form ions

Ithe undersigned only for use your own email and delete any and copies and of the itself and to be there is a good timewhat does a decrease in temperature indicate about the molecules in a sample of liquid water? decreased chemical energy of the moleculesdecreased kinetic energy of the moleculesincreased chemical energy of the moleculesincreased kinetic energy of the moleculeshow does a sample of helium at 15 â°c compare to a sample of helium at 215 k? the helium at 15 â°c has a higher average kinetic energy than the sample at 215 k.the helium at 15 â°c has lower nuclear energy than the sample at 215 k.the helium at 15 â°c has slower-moving atoms than the sample at 215 k.the helium at 15 â°c has smaller atoms than the sample at 215 k.

Catalysts and intermediateshope i