Valence Electrons and Protons

Based on the model, which statement accurately describes the reactivity of sodium?

• Sodium is slightly reactive because it has one more neutron than protons

• Sodium is highly reactive because it has a filled outer shell of valence electrons

• Sodium is slightly reactive because it has an equal number of protons and electrons

• Sodium is highly reactive because it has only one valence electron

Tags

NGSS.MS-PS1-1

Which student's claim about valence electrons in a sulfur atom is correct?

• Student 1

• Student 2

• Both Student 1 and Student 2

• Neither Student 1 nor Student 2

Tags

NGSS.MS-PS1-1

What reasonable conclusion can be made from the information given?

• Element 1 has the same atomic mass as Element 4

• Element 3 has very similar chemical properties as Element 4

• Element 1 has very similar chemical properties as Element 3

• None of the above

Tags

NGSS.MS-PS1-1

Which value is most likely the number of protons for saturntonium?

• 388

• 219

• 169

• 171

Tags

NGSS.MS-PS1-1

• 14

• 4

• 3

• 28

Tags

NGSS.MS-PS1-1

• 7
• 8
• 9
• 10

Tags

NGSS.MS-PS1-1

How many valence electrons does Chlorine have?

• 5

• 2

• 7

• 5

How many valence electrons in this diagram:

• 1

• 3

• 5

• 7

Tags

NGSS.MS-PS1-1

How many valence electrons are represented here?

• 7

• 5

• 2

• 8

Tags

NGSS.MS-PS1-1

How many valence electrons?

• 2

• 3

• 4

• 5

Tags

NGSS.MS-PS1-1