Do You Know Any Jokes About Sodium?

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By Mattie N.

The Periodic Table.

Groups are vertical (up and down) and periods are horizontal. (side to side.) As of right now there are 118 different elements in the periodic table and there are three different types of elements (metals, nonmetals, and metalloids.)

How to Read The Periodic Table.

Protons

Protons are positively charged and are found in the nucleus. They weigh 1 amu.
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Neutrons

Neutrons are negatively charged and are found in the nucleus of the atom. They weigh 1 amu.
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Electrons

Electrons are negatively charged and are located in the electron cloud or orbital. They weigh about 1 amu.
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Valence Electrons

Valence electrons are the outermost orbital of electrons. They are responsible for the bonding. To find the number of valence electrons you look at the groups and the numbers on top of the groups. Ex: 2A, 6A.
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Calculating P E N

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How To Find the Number of Protons

The number of protons are the same number as the atomic number.

How to Find the Number of Electrons

The number of electrons is the same as the atomic number, which is also the same number as the number of protons.

How to Find the Number of Neutrons

To find the number of neutrons, you round the atomic mass and subtract the atomic number from it.