Not only does Snape need to teach his students about hydration states, but also naming hydrates. What is the correct formula for barium hydroxide octahydrate and magnesium sulfate heptahydrate.

The chemical formula of barium hydroxide octahydrate is and that of magnesium sulfate heptahydrate is

Explanation:

Ionic compound is defined as the compound which is formed by complete transfer of electrons from one atom to another atom.

The atom which looses the electron is known as electropositive atom and the atom which gains the electron is known as electronegative atom. This bond is usually formed between a metal (carrying positive charge) and a non-metal (carrying negative charge)

These are usually formed when a metal reacts with a non-metal or a metal reacts with a polyatomic ion or a reaction between two polyatomic ions takes place.

Barium hydroxide octahydrate is formed by the combination of barium ions and hydroxide ions

There are 8 water of crystallization around the given compound.

The chemical formula of this compound is

Magnesium sulfate heptahydrate is formed by the combination of magnesium ions and sulfate ions

There are 7 water of crystallization around the given compound.

The chemical formula of this compound is

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