Perform the following operation and express the answer in
scientific notation.
7.00×10^8 – 5.00x10^6
[?]x10^[?]

Both models are effective because they show the valence electrons, and these valence electrons indicate the reactivity of an element.

Sorry i dont understand the question can you rephase it?

The atomic nucleus made up from protons (yellow) and neutrons (blue) and held together by nuclear forces. nuclear forces (also known as nuclear interactions or strong forces) are the forces that act between two or more nucleons. they bind protons and neutrons (“nucleons”) into atomic