Bohr Rutherford diagrams

What is the tiny, massive central part of the atom?

• Neutron

• Proton

• Nucleus

Use your periodic table.

What element is represented in this Bohr Model? 

• Hydrogen

• Lithium

How many electrons does potassium K contain? 

• 19

• 40

What group does this element belong to?

• Metals

• Noble Gases

Carbon-12 has 6 protons and 6 neutrons. How many electrons will orbit the nucleus?

• 6

• 18

What's a valence electron?

• electrons in the outermost energy level

• the atomic number

What is the atomic number of this atom?

• 2

• 4

• 6

How many valence electrons?

• 3

• 5

How many electrons does potassium K contain? 

• 19

• 40

which element is this?

• radon

• krypton

• xenon