An element, Y, has seven valence electrons. It bonds ionically, in a one-to-one ratio, with another element, X. State the possible identities of X and Y and their characteristic charges.

Voltaic cells produce a positive overall charge. what does this indicate? a. the reaction is likely to be endothermic. b. the reaction is spontaneous. c. the reaction is not likely to occur. d. the reaction is not spontaneous.

Which electron configuration represents the electrons in an atom of sodium in the ground state at stp

What type of interaction occurs between the r groups of valine and isoleucine in a tertiary structure? view available hint(s) what type of interaction occurs between the r groups of valine and isoleucine in a tertiary structure? salt bridge disulfide bridge hydrogen bond hydrophobic interaction