Answer:
You take the atomic, or proton number of the element, and you subtract it from the element's mass number.
The answer is 5.4! I found it on a an online calculator!
Answer:
The crust is made of solid rocks and minerals. Beneath the crust is the mantle, which is also mostly solid rocks and minerals, but punctuated by malleable areas of semi-solid magma. At the center of the Earth is a hot, dense metal core.
Explanation:
Plants require pH to thrive which in turn gives us food.