Write answers to the following questions and explain your answers.a. Explain how the element sodium is monovalent.b. M is a bivalent metal. Write down the steps to find the chemical formulae of its compounds formed with the radicals, sulphate and phosphatec. Explain the need for a reference atom for atomic mass. Give some information about two reference atoms.d. What is meant by Unified Atomic Mass.'e. Explain with examples what is meant by a 'mole' of a substance.

Write answers to the following questions and explain your answers.a.

1.	Write answers to the following questions and explain your answers.a. Explain how the element sodium is monovalent.b. M is a bivalent metal. Write down the steps to find the chemical formulae of its compounds formed with the radicals, sulphate and phosphatec. Explain the need for a reference atom for atomic mass. Give some information about two reference atoms.d. What is meant by Unified Atomic Mass.'e. Explain with examples what is meant by a 'mole' of a substance.
Answer» Write answers to the following questions and explain your answers. a. Explain how the element sodium is monovalent. b. M is a bivalent metal. Write down the steps to find the chemical formulae of its compounds formed with the radicals, sulphate and phosphate c. Explain the need for a reference atom for atomic mass. Give some information about two reference atoms. d. What is meant by Unified Atomic Mass.' e. Explain with examples what is meant by a 'mole' of a substance.