can someone tell me the electron configuration and orbital diagram (arrow things in boxes) of Xenon and Iodine who oactually knows how to answer this pls?

Yes, endothermic means it turns cold. and some chemical changes include change of tempature.

Answerd. may include all of these are many definitions of bases: the  brønsted-lowry definition of acids and bases says that bases are proton acceptors.the arrhenius definition of acids and bases says that bases increase [oh⁻] in solution (thereby producing oh⁻ ions)the lewis definition of acids and bases says that bases donate electron pairs.therefore, the sensible answer is that a base may include all of the described characteristics.