periodic table

The vertical (up and down) columns in the Periodic Table are called

• groups

• towers

• periods

• atomic numbers

The Modern Periodic Table of Elements is arranged by

• atomic mass

• atomic number

• valence electrons

• number of isotopes

How many protons are in a nitrogen atom?

• 5

• 7

• 14

• 28

How many valence electrons do the atoms of elements in group 13 have (the Boron Group)?

• 3

• 5

• 8

• 13

The rows across the table are called

• Paragraphs

• Periods

• Classes

• Categories

The 1st group in the table is called

• Alkali Earth Metals

• Halogens

• Noble Gases

• Alkali Metals

Halogens are in group ?

• 1

• 2

• 17

• 14

Which of the following is a noble gas?

• Oxygen

• Hydrogen

• Neon

• Platinum

How many groups/families are in the table?

• 14

• 44

• 18

• 7

How many periods are in the table?

• 7

• 14

• 36

• 18