Electrons in atoms

How many electrons per shell does sodium (₁₁Na) have?

• 2,8

• 2,8,2

• 2,8,1

• 2,2,8

Tags

NGSS.HS-PS1-1

How many electrons per shell does calcium (₂₀Ca) have?

• 2,8,8,2

• 2,8,10

• 2,8,2,8

• 2,1,8,2

Tags

NGSS.HS-PS1-1

What atom matches this electron configuration?

1s²2s²2p⁶3s²

• ₂₀Ca

• ₁₂Mg

• ₁₃Al

• ₁₉K

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which electron configuration is correct for oxygen (₈O)?

• 1s²2s²2p⁶3s2, 3p⁶4s²3d¹⁰4p⁵

• 1s²2s²2p⁴

• 1s²2s²2p⁶

• 1s²2s²2p⁶3s²3p⁶4s²3d¹

Tags

NGSS.HS-PS1-1

Which atom matches this electron configuration?

1s²2s²2p⁶3s²3p⁶4s²3d¹⁰

• ₃₀Zn

• ₂₉Cu

• ₂₈Ni

• ₃₂Ge

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the shape of an s orbital?

• sphere

• dumbbell

• double dumbbell

• dumbbell and circle

What is the shape of a p orbital?

• sphere

• double dumbbell

• dumbbell

Which are the four atomic orbitals?

• s,p,d,f

• a,b,c,d

• s,t,e,p

• d,r,o,f

Within an energy level, which orbitals are the lowest in energy?

• s

• f

• d

• p

Tags

NGSS.HS-PS1-1

How many electrons can there be in one orbital?

• 2

• 4

• 6

• 10