Question

plsss give the correct answer plsss​

Answer 1

Answer:

Here is ur answer ✌️✌️

Explanation:

2)correct.

3)Incorrect .the formula of an oxide of aluminium is Al 2 O3.

5) Correct

hope it will help u ❣️❣️

Answer 2

Answer:

its valency should be 2-

Explanation:

1.If an element gain 2electron in its valence shell the the. it becomes 2- anion.We know that anion number is the valency of an element

2.no,the shell outer most of the nucleus is called valence shell

3.it should be Al2O3

4.nuclear charge or neclear mass

5.