Understanding Empirical Formulas & Ions: 2 Questions Answered

[omni]

2 Questions please

hello.
i need help to Understand how can i Write Empirical formula for Al or in general how to Write Empirical formula?

2)i also need help to Understand how can i know what Ion i will get from Ba and P ?



i think for ba is will be Negative because there more Electron. but i dosen't understand it very well.

hope u can help me.
thanks :).

 

[paragchitnis]

Empirical formula is the simplest ratio of number of atoms in the compound.
For a compound C₂H₆, the empirical formula is CH₃
Al is a single atom. Its empirical formula will be same i.e. Al

 

[paragchitnis]

Formation of cation or anion does not depends on the number of electrons in atom. As Ba is metal it has property to lose electron. It will form cation while P is non-metal is accept electron. It will form anion.

 

[omni]

hi thanks for ur Answers but i mean Al and N Together.

In General how can i know what element is property to lose electron and what element is accept electron ?

there is any rule for it?
thanks.

 

[Borek]

hi thanks for ur Answers but i mean Al and N Together.

Al and N what?

In General how can i know what element is property to lose electron and what element is accept electron ?

there is any rule for it?

It is enough to consult periodic table.

 

[omni]

ok i Understand.

thanks to all.