How does the number of valence electrons change for atoms as you move in order from element 1, Hydrogen (M), to element 18, Argon (An), on the periodic table? The number of valence electrons only increases

The number of valence electrons decreases across the period and then increases at the beginning of the next energy level

The number of valence electrons increases across the period and then decreases at the beginning of the nen energy level

The number of valence electrons only decreases

h let me think

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.