Answer:
covalent bond
Explanation:
a covalent bond happens between two nonmetals
a ionic bond happens between a metal and a non metal
CO2 is a bond between carbon and oxygen
carbon and oxygen are both non metals therefore CO2 is a covalent bond
Electron structure of sodium:
₁₁Na: 1s²2s²2p⁶3s¹
Water vapor has more energy because it is a gas :)
Methane CH4
ethane C2H6
propane C3H8
Butane C4H10
pentane C5H12