Someone please help with my chemistry.

1) it is not possible. The only things that can change is the number of electrons and the neutrons making isotopes ...

2) neon is a stable element so it cannot change its neutrons..

3)Yes sodium is not a stable element so it can change it's valence electrons..

Explanation:

Hope this helped you..Have a nice day

1.)In an oxygen atom,there are 8 protons and 8 electrons.Most oxygen atoms also have 8 neutrons,but it is possible for an oxygen atom to have 9 or 10 neutrons.They are just rarer.The oxygen we breathe is not atomic form.

you need to stop taking that class