Write the complete chemical symbol for the neutral element that contains 7 electrons, and 9 neutrons.

7/16 N

Explanation:

Since it is neutral we know that it also contains 7 protons, which is shown by the atomic number. 7 matches with nitrogen.

There are 9 neutrons so add 9+7=16

7/16 N (not sure how to show it on but it would look something like this)

b. acid is the correct answer @jayxboof all social media

acid : acids are those which accepts an electron-pairs.

base : bases are those which donates ab electron-pairs.

alkali : it is a base that dissolves in water. it is basically a base and the ph greater than 7.

hydroxide ion : it is a poly-atomic ion which is negatively charged.

the answers would be

the first one and the second one