5 Questions
What is the valency of the metal X in the compound XCl2?
The valency of the metal X in the compound XCl2 is 2+.
State the formula of the sulphate and the hydroxide of the metal X.
The formula of the sulphate of the metal X is XSO4 and the formula of the hydroxide is X(OH)2.
Write the balanced equation for the combustion of the trivalent element X in oxygen.
The balanced equation for the combustion of the trivalent element X in oxygen is X + O2 -> X2O3.
What is the valency of nitrogen in the compounds NO, N2O, and NO2?
The valency of nitrogen in NO is 2, in N2O is 1, and in NO2 is 4.
What is meant by the term ‘symbol’ in the context of chemistry?
Symbol is the short form that stands for the atom of a specific element. It represents both the qualitative meaning, where it stands for a specific element, and the quantitative meaning, where it represents the quantity of the element, i.e. atomic mass of the element.
Test your knowledge of chemical formulas and equations with this exercise. Answer questions related to metal chlorides, sulfates, hydroxides, nitrides, and combustion reactions.
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