How many potassium atoms and how many oxygen atoms are there in binary compound made from these two element?

Answer 1

A compound containing potassium and oxygen atoms would have a formula of K2O, and would be named potassium oxide. This is a binary ionic compound.

Answer 2

When combined with other elements, potassium (K) always forms a +1 ion. Oxygen (O), when combined with other elements almost always (with a few rare exceptions) forms a -2 ion. Therefore, when these combine to form a binary compound, the charges must balance out. Therefore there must be 2 K+ ions for each O2- ion because 2*1 = 2!

So the ratio must be 2 potassiums for each oxygen.

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Three potassium oxides are known:

- K2O: 2 potassium atoms and 1 oxygen atom

- KO2: 1 potassium atoms and 2 oxygen atoms

- K2O2: 2 potassium atoms and 2 oxygen atoms

Answer 3

I think it's One potassium atom to Two oxygen atoms.

that's wrong it's Two potassium atoms to one oxygen atom.

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Three potassium oxides are known:

- K2O: 2 potassium atoms and 1 oxygen atom

- KO2: 1 potassium atoms and 2 oxygen atoms

- K2O2: 2 potassium atoms and 2 oxygen atoms

Answer 4

There are 2 'K' and 1 'O' atoms in K2O, the most common Potassium oxide.

However, two other potassium (super- and per-) oxides are known:

Potassium superoxide: KO2: 1 potassium atoms and 2 oxygen atoms

Potassium peroxide: K2O2: 2 potassium atoms and 2 oxygen atoms