Valence Electrons/Electron Shells/Lewis Dot Diagrams

Where is Calcium located on the periodic table?

• Group 4A, period 2

• Group 2A, period 4

• Group 7A, period 2

• Group 2A, period 7

Valence Electrons are the electrons located where?

• The outer shell of an atom

• The inner shell of an atom

• The nucleus of an atom

• In all of the shells of an atom

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many valence electrons are in the atom shown in the picture?

• 2

• 3

• 5

Tags

NGSS.MS-PS1-1

Based on the number of shells and valence electrons, which element is pictured?

• Nitrogen

• Indium

• Arsenic

• Phosphorous

Tags

NGSS.MS-PS1-1

How many electron shells are in an atom of Carbon?

• 1

• 2

• 3

• 4

How many electron shells are in an atom of Argon?

• 1

• 2

• 3

• 4

What is the ONLY element in column 8A that does NOT have 8 valence electrons?

• Helium

• Neon

• Argon

• Krypton

Tags

NGSS.HS-PS1-1

Elements that are in the same GROUP on the periodic table always have the same number of

• Protons

• Neutrons

• Electrons

• Valence Electrons

• Electron Shells

Elements that are in the same PERIOD on the periodic table always have the same number of

• Protons

• Neutrons

• Electrons

• Valence Electrons

• Electron Shells

The greatest number of VALENCE electrons that any element could have is

• 2

• 7

• 8

• 16

• 118

Tags

NGSS.HS-PS1-1