How would you determine the number of neutrons in an atom? show as a formula!

n = A – Z

Explanation:

The general symbol for an atom of an element X is , where

Z = the atomic number = the number of protons (p) and

A = the mass number = the number of protons + the number of neutrons (n)

A = p + n

Subtract Z from A. Then,

A - Z = p + n – p = n

or

n = A - Z

Algae, which live in water and whose larger forms are known as seaweed, is autotrophic. Phytoplankton, tiny organisms that live in the ocean, are autotrophs. Some types of bacteria are autotrophs. Most autotrophs use a process called photosynthesis to make their food.