What is the net charge on ferrous ion ?

If the number of electrons in an ion is 10 and the number of protons is 9, then What is the charge on the ion?

A surface encloses +10nC and -2nC of charge. What is the net charge enclosed by it?

What is net charge on electric dipole ? Why ?

What is the net charge on a polarized dielectric molecule.

Draw the Lewis symbol for Calcium. Will it form an ion? What is the expected charge on ion?

If the number of electrons in an ion is 10 and the number of protons is 9, then what is the charge on the ion?

What is the net charge on a charged capacitor?