Please help ASAP! Please and thank you have a great and blessed day!,

Check the correct box to describe the periodic trends in electronegativity. electronegativity across a period: decreases. increases. electronegativity down a group: decreases. increases.

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

Predict whether the changes in enthalpy, entropy, and free energy will be positive or negative for the boiling of water, and explain your predictions. how does temperature affect the spontaneity of this process?