The question is not clear. Do you mean what's the maximum amount of valence electrons a shell could hold? If that's what you meant then the first shell can hold 2, the second can hold 6, the third can hold 8. If you're in University then the answer would be different however.
A hydronium ion has a charge of one plus
Its A Natural resources are found in abundance in the US.
A covalent bond is a form of chemical bonding between two non-metals, whereas ionic bonding is a bond between a metal and a non-metal.
1a. calcium chloride (CaCl2)
b. 2HCl (aq) + Ca(OH)2 (s) —> CaCl2 (aq) + 2H2O (l)
i’m not sure about the rest but i hope this helped ^^
