What is the identity of the atom shown? A). Fluorine
B). Neon
C).nitrogen
D).potassium

Option A

Explanation:

The answer to this question is the first option or "fluorine." You can find the amount of protons, neutrons, and electrons by looking at the elements atomic number and mass number. In this case we have the first option fluorine which it's atomic number is nine which is why the element has nine protons, and electrons, and nine neutrons because of it's mass number.

Hope this helps.

the solar system used to have much dust particles option no d

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.