Answer:
its the first one.
Explanation:
If sodium loses an electron, it now has 11 protons, 11 neutrons, and only 10 electrons, leaving it with an overall charge of +1
Substances have more kinetic energy in the gas state than in the solid state
covalent bond is firmed between two atoms
Answer: 5
Explanation: this is because the energy level of the emitted of absorbed photon increases as the number of electron shell decreases, thereby making the inner shell have higher energy than other shells
