Chemistry elemeents names?

Question

when do you use like
Iron (III) hydroxide
what is ionic? is it non metal+ metal
and when do you use like covelent ?
is it non-metal and non metal?
can you give an example for each one?
even if i get this right or wriong, please explain ionic and covelent precisely using simplified words since im not an english native speaker thank you

Answer 1

The transition metals, such as iron, have multiple valence possibilities. SO the roman numeral is necessary to specify the valence charge. Iron could have +2 or +3. In your example, it is +3.

Ionic bonding means transfer of electrons from the cation to the anion.

NaCl

Covalent means sharing the electrons between the 2 atoms (could be metal / non metal, or non metal / non metal)

CH4

Answer 2

You use the parentheses when you are dealing with transition metals like copper, zinc, iron or any other element in columns 3-12 that can have different charges depending on the compound they form...........You are correct with ionic it is a positively charged element usually a metal with a negatively charged nonmetal. An example is sodium chloride or lithium fluoride.......Covalent is typically nonmetal with nonmetal like phosphate made with phosphorous and oxygen or sulfate with sulfur and oxygen where they share electrons. Hope this helps.

Answer 3

if your talking about bonds an ionic bond takes electrons from another atom causing it to have a negative charge and the other to have a postive charge.
Covelent bonds are when two or more atoms share electrons.