Periodic Table and Ions

How many valence electrons?

• 1

• 2

• 4

• 6

Tags

NGSS.MS-PS1-1

The number of valence electrons?

(a)  

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

The number of valence electrons?

• 1

• 2

• 4

• 6

Tags

NGSS.HS-PS1-1

Determine the element:
6 total electrons in neutral state

• C - Carbon

• Br - Bromine

• Na - Sodium

• Sc - Scandium

Determine the element:

Is in group 3, period 4

• C - Carbon

• Br - Bromine

• Na - Sodium

• Sc - Scandium

Determine the element:

11 total electrons in the neutral state

• C - Carbon

• Br - Bromine

• Na - Sodium

• Sc - Scandium

Determine the element:

Is a halogen with 4 shells of electrons

• C - Carbon

• Br - Bromine

• Na - Sodium

• Sc - Scandium

Which of the following is isoelectronic (same number of electrons) with Ne? [2 answers]

• F^-

• Cl

• Na⁺

• He

Tags

NGSS.HS-PS1-1

Which of the following is isoelectronic (same number of electrons) with Kr? [2 answers]

• Xe

• Br^-

• Sr²⁺

• Cl^-

Tags

NGSS.HS-PS1-1

Which of the following is isoelectronic (same number of electrons) with He? [2 answers]

• H

• Li+

• Na

• B³⁺

Tags

NGSS.HS-PS1-1