The N=2 energy level contains which sub levels?
A) S
B) P
C) D
D) F

Your roll: experienced electron speech is adressed to: a new "freshman class" of electrons job: write a speech task: you are to pretend that you are giving a speech to a new group of electrons. be sure to mention their placement in an atom, their charge, and their role in chemical bonding (ionic and covalent) be specific!

The element that has the greatest electronegativity is

If 3 moles of a compound use 24 j of energy in a reaction, what is the a hreaction in j/mol?