Periodic Table

The number at the bottom of each square on the periodic table is the ...

• atomic number
• atomic mass
• chemical symbol
• element name

Which has a positive charge?

• neutron

• electron

• tron

• proton

Which number shows the atomic number?

• 2

• 4.0026

• 4

• HE

Atoms with the same number of protons but different number of neutrons.

• covalent bonds

• isotopes

• ionic bonds

• ions

Which subatomic particles are the smallest?

• Neutrons

• Protons

• Electrons

• Atoms

How many protons are in Beryllium?

• 4
• 9
• 5
• 2

How many electrons does an Iodine atom have?

• 53
• 126
• 73
• 179

How many neutrons does an Oxygen atom have?

• 8

• 16

• 24

• 7.999

How many protons does P-30 have?

• 30
• 16
• 12
• 15

How many protons does this isotope of titanium have?

• 48
• 22
• 26
• 70