F because it NEVER forms any cations in chemical reactions
<span>Cr3+ O2- ; the formula is Cr2O3 ( criss cross)</span>
Um, I think it’s: k is potassium and F is fluorine so potassium Fluoride
The answer should be (4) they are negative subatomic particles and are found surrounding the nucleus. The nucleus is formed by neutrons and protons. Neutrons are neutral and protons are positive.