Write balanced chemical equations for the following reactions:(a) sodium oxide added to water(b) cesium carbonate added to an excess of an aqueous solution of HF(c) aluminum oxide added to an aqueous solution of HClO4(d) a solution of sodium carbonate added to solution of barium nitrate(e) titanium metal produced from the reaction of titanium tetrachloride with elemental sodium

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Group 15 elements

The elements of group 15 are phosphorus, nitrogen, bismuth antimony, and arsenic. The most abundant element which is present in the air is nitrogen and the percentage of nitrogen present in the air is 78%. In the free state, the elemental nitrogen is present as diatomic gas (N2). In the organic matter obtained from plants and animals, phosphorus is the dominant element present. In nucleic acids, phosphate groups are present. Phosphates are also found in teeth and bones. The other elements arsenic, bismuth, and antimony are found as sulfides. Arsenopyrite, bismuth glance, and stibnite are examples of sulfides of arsenic, bismuth, and antimony respectively.