Biology Chesterton (CASH-Peoria) ch2

Periodic table

100

This is the number of the element, and corresponds with the number of these within the atom.

What is proton?

200

If the symbol has a negative charge of -1, this is the formula used to figure out the number of electrons the atom has.

What is 'atomic number -1'?

300

This is the number of neutrons that Sodium has with the atomic number of 11 and atomic weight of 22.990.

What is 12?

 (22.990 - 11 = 11.990 rounded to nearest whole number)