Periodic Table

Question 1

How are elements arranged on the Periodic Table?

Answer 1

In increasing order of the atomic number.

Question 2

What determines the atomic number?

Answer 2

The number of protons in the nucleus of the atom in an element.

Question 3

What determines the atomic mass?

Answer 3

The number of protons and neutrons in the nucleus of the atom in an element.

Question 4

What determines the column or group the element is located in on the Periodic Table?

Answer 4

The number of valence electrons of the atom in an element because all the elements in a group have the same number of valence electrons.

Question 5

What determines the row or period that the element is located in on the Periodic Table?

Answer 5

The number of valence electrons of the atoms in an element.

RULE:When moving left to right of a row the number of valence electrons increases. When moving down the rows of the Periodic Table, the number of electron shells of the atom in each element increase.