How are elements represented on the Periodic Table of Elements?

Answer 1

Every element on the Periodic Table is made of a number of protons and neutrons in the center with electrons around them. What makes one element different from another is the number of protons it has. The number of protons an element has is equal to that element's number on the periodic table.

So, for example, Helium, which is element #2, has two protons. Oxygen, element #8, has 8 protons.

The element's number that is also its number of protons is the small whole number located above the element symbol. E.g. 8 is written above O for oxygen. (The larger decimal number below the element symbol is something different, the average mass of the element.)

Answer 2

The names of the elements are generally represented by the two letter abbreviation for the Latin name for the element; for example, the Latin word for "silver" is argentum, abbreviated Ar.

Answer 3

Elements are arranged by increasing atomic number. There are groups (columns) and periods (rows) with show physical and chemical trends. Metallic elements are on the left while non-metals are on the right.

Answer 4

They are represented by the atomic number. (Usually the smaller of the two whole numbers [no decimals] in each box).

Answer 5

The number of protons present in an element is the same as the atomic number of the element. Each element has a unique number of protons, and therefore a unique atomic number.

Answer 6

Proton number = place number = atomic number = count from left to right and top to bottom, like latin book.

Answer 7

horizontally and vertically