When an atom forms negaitive ion. Give the number of valence, 70. Using orbital notation, 75. Which has the greater lattice energy, 81. Give the formula for each, 82. Name each of the following ionic compounds

well in order to answer this question you have to provide more information < 3

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.

the pseudoscience are like beliefs, theories, or like practices that are considered scientific