People had asked this many times and that is why they came up with methods and standards that will answer these type of questions. You can look it up in the NIST or the National Institute for Standards and Technology.
It is A)The smallest unit of Ne
You could write about a fear you may have had as a child, eg. the dark, or underneath the bed, etc...
When Sodium and Chlorine come together they transfer an electron.
- Source: google
Hopefully this was clear and you understood!