Electron Configuration for Atoms and Ions

Which atom has the ground-state electron configuration: [Ne] 3s²

• Neon

• Magnesium

• Aluminum

• Potassium

Tags

NGSS.HS-PS1-1

What electron configuration matches a bromine atom?

• 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁵

• 1s²2s²2p⁴

• 1s²2s²2p⁶

• 1s²2s²2p⁶3s²3p⁶4s²3d¹

Tags

NGSS.HS-PS1-1

The electron configuration of a particular atom is 1s²2s²2p⁴. The total number of electrons in the atom is

• 3

• 6

• 8

• 10

Tags

NGSS.HS-PS1-1

Which ground-state electron configuration belongs to a chloride ion (Cl^-)?

• 1s² 2s² 2p⁶ 3s² 3p⁵

• 1s² 2s² 2p⁶ 3s² 3p⁶

• 1s² 2s² 2p⁶ 3s² 3p⁷

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which atom has the ground-state electron configuration: [Ne] 3s²3p⁶ ?

• Neon

• Argon

• Aluminum

• Potassium

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which atom has the ground-state electron configuration: [Xe] 6s²4f¹⁴5d¹⁰6p³ ?

• Tin

• Lead

• Bismuth

• Xenon

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Select the ions that are isoelectronic with the noble gas, argon? (more than one answer to select).

• sulfide ion, S^2-

• oxide ion, O^2-

• chloride ion, Cl^-

• sodium ion, Na⁺

• calcium ion, Ca²⁺

Tags

NGSS.HS-PS1-1

If an atom of a particular element gains one, or more, electron(s) to form an ion, the ion has a _____________ charge.

• positive

• negative

• neutral

If an atom of a particular element loses one, or more, electron(s) to form an ion, the ion has a _____________ charge.

• positive

• negative

• neutral

Positively-charged ions are known as _________.

• cations

• anions

• minions