Chemistry- Unit 1 revision

What is the electron configuration for this atom?

• 1s²2s²2p⁶
• 1s²2s²2p⁵
• 1s²2s²2p³
• 2s²2p³

Tags

NGSS.HS-PS1-1

What atom matches this electron configuration?
1s² 2s² 2p⁶ 3s²

• Neon
• Magnesium
• Aluminum
• Potassium

Tags

NGSS.HS-PS1-1

Which is the electron configuration for an oxygen atom?

• 1s²2s²2p⁶3s²3p⁶4s²
• 1s²2s²2p⁴
• 1s²2s²2p⁶
• 1s²2s²2p⁶3s²3p⁶

Tags

NGSS.HS-PS1-1

How many electrons can the d sublevel hold?

• 8
• 10
• 2
• 4

What is this element? 
1s²2s²2p⁶3s²3p⁶
4s²3d¹⁰4p⁶

• Argon
• Krypton
• Selenium
• Bromide

Tags

NGSS.HS-PS1-1

found in group 1 of the periodic table; highly reactive

• alkali earth metals

• Transition Metals

• alkali metals

• halogens

A subatomic particle that has a positive charge and that is found in the nucleus of an atom

• Proton

• elecrtron

• groups

• neutrons

A subatomic particle that has a negative charge

• nobles gases

• protons

• electrons

• neutrons

Tags

NGSS.MS-PS2-3

The electrons in the outermost shell (main energy level) of an atom; these are the electrons involved in forming bonds

• alkali metals

• Halogens

• atomic number

• valence electrons

Which of the following will have a larger radius than Zinc?

• Gallium
• Aluminum
• Magnesium
• Strontium

Tags

NGSS.HS-PS1-1