3.3 Valence Electrons on Periodic Table

How many valence electrons in Mg? Just give me the number.

How many valence electrons in Al? Just give me the number.

How many valence electrons in Xe? Just give me the number.

How many valence electrons in Rb? Just give me the number.

How many valence electrons in Sb ? Just give me the number.

How many valence electrons in He ? Just give me the number.

How many valence electrons are found in atoms of group 14?

• 4
• 3
• 14
• 16

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What are valence electrons?

• The total number of electrons in an atom

• The number of electrons in the outermost shell

• The number of electrons in the second shell

• The number of protons in the outermost shell

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Which elements have the most similar chemical properties?

• boron and carbon

• oxygen and sulfur

• aluminum and bromine

• argon and silicon

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When trying to identify an unknown element, a scientist determines what other elements reacts with chemically. Which property of the unknown element determines the other element it reacts with?

• The total number of neutrons in the unknown element

• The total number of particles in the nucleus of the unknown element

• The number of protons in the nucleus of the unknown element

• The number of valence electrons in the unknown element

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2