Periodic Trends

How many valence electrons does sodium (Na) have?

• 1
• 2
• 11
• 23

How many valence electrons does Calcium (Ca) have?

• 1
• 2
• 3
• 4

Tags

NGSS.HS-PS1-1

What element in period 2 has 7 valence electrons?

• Beryllium
• Chlorine
• Magnesium
• Fluorine

How many total electrons does Fluorine (F) have?

• 2
• 7
• 9
• 19

What element has the same valence electrons as phosphorus (P)?

• silicon
• arsenic
• sulfur
• sodium

Which electron configuration represents an an element with 6 valence electrons?

• 1s²2s²2p²
• 1s²2s²2p⁶
• 1s²2s²2p⁴
• 1s²2s²2p⁴3s²

How many valence electrons are in aluminum (Al)?

• 3
• 6
• 13
• 8

How many valence electrons are in nitrogen (N)?

• 5
• 6
• 8
• 7

How many valence electrons are in xenon (Xe)?

• 8
• 18
• 10
• 6

Which is involved in bonding?

• protons
• neutrons
• electrons
• valence electrons