Bohr Model and Valence Electrons

How many protons are in an atom of magnesium?

• 3
• 12
• 24
• 40

How many electrons can the first energy level hold?

• 2
• 4
• 6
• 8

How many energy levels are found in period 2?

• 1
• 2
• 3
• 4

Which element has the same number of electrons in the outermost energy level as lithium?

• Hydrogen
• Beryllium
• Carbon
• Magnesium

Which element has the same number of energy levels as nitrogen?

• Boron
• Chlorine
• Phosphorous
• Silicon

• F
• G
• H
• J

• A
• B
• C
• D

• F
• G
• H
• J

• A
• B
• C
• D

What atom is represented by 35 protons, 45 neutrons, and 35 electrons?

• Mercury
• Bromine
• Rhodium
• Ytterbium

Tags

NGSS.MS-PS1-1