The element X is an important regulator of human metabolism and is essential in the composition of some hormones regulating the physiological activity. X is found in ambient conditions in the form of a solid violet able to form different substances, among them, four compounds A, B, C and D in order of increasing oxidation number of X. All these compounds A, B, C and D react with water to form other compounds, respectively, E, F, G and H, of which H is a very forte.Além oxidative addition, X is also found as a binary compound with the element Y, M in the form of the compound, which belongs to the same class of substances E, F, G and H. It can also be found in salts, among which is a component present in table salt, NazX. Still can simply find themselves in the form of simple substance in the gas phase at temperatures not too high, even at ambient pressure.
A) Determine X and Y
B) What other compounds represented by A, B, C, D, E, F, G, H and M?
C) What is the value of Z? And what are the oxidation numbers of X in the compounds A, B, C and D?
D) Represent the balanced equations of chemical reactions cited in the text.
E) What is the geometry of the composite X7?