Electron Configuration and Ions Quiz

What is the main focus of the video tutorial?

• Periodic table trends

• Electron configuration of neutral atoms

• Electron configuration of ions

• Chemical bonding

How many electrons does a neutral fluorine atom have?

• 9

• 8

• 10

• 7

What is the electron configuration of a fluoride ion?

• 1s2 2s2 2p5

• 1s2 2s2 2p3

• 1s2 2s2 2p4

• 1s2 2s2 2p6

Which noble gas configuration is used to simplify the electron configuration of calcium?

• Neon

• Argon

• Helium

• Krypton

What happens to the 4s electrons in a calcium ion with a positive two charge?

• They remain unchanged

• They are doubled

• They are gained

• They are lost