Remember, OIL RIG
Oxygen Is Loss of electrons
Reduction Is Gain of electrons
If something goes from + to - then it has gained electrons
If something goes from neutral to - it has gained electrons
If it goes from - to + is loses electrons
If it goes from neutral to + it loses electrons
If something is oxidised, it is a reducing agent
If something is reduced, it is an oxidising agent
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The answer is A (The ability to react with oxygen)
In a liquid, particles are close together but can move in any direction. They won't keep a definite shape like solids do.
What do you need help on?
He ^ 2+
Helium has two electrons the 2+ means that it has lost its two electrons leaving it with none.