Choose all the answers that apply. Neon (Ne) is in group 18 and period 2. Which of the following is true?
O Neon doesn't react with other elements under normal conditions.
O Neon is a gas under normal conditions.
O Neon has two electron shells.
O Neon is part of the metal group.
O Neon is a noble gas.

Which of the following is not a characteristic of a hydrogen bond? 1. it is responsible for the unusual physical properties of water. 2. it is weaker than a covalent bond. 3. it is stronger than other dipole-dipole interactions. 4. it can occur when hydrogen is covalently bound to very electronegative elements liks f, cl, br and i.