A certain element has only two naturally occurring isotopes: one with 18 neutrons and the other with 20 neutrons. The element
forms I- charged ions when in ionic compounds. Predict the iden-
tity of the element. What numberof electrons does the I- charged
ion have?

What pressure will be exerted by 0.675 moles of a gas at 25*c if it is in a 0.750-l container?

Which statement is usually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.

Draw metallic bonding if two copper