What atom matches this electron configuration?
1s²2s²2p⁶3s²

• Neon
• Magnesium
• Aluminum
• Potassium

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many electrons can the first energy level hold?

• 1
• 2
• 8
• 0

What is the electron configuration for nitrogen?

• 1s² 2s² 2p³
• 1s² 2s³ 2p²
• 1s² 2s³ 2p¹
• 1s² 2s² 2p² 3s¹

Tags

NGSS.HS-PS1-1

The distance traveled between two successive peaks of a waves is the

• speed
• frequency
• wavelength
• energy

Tags

NGSS.HS-PS4-1

If electrons in an atom have the lowest possible energies, the atom is in the

• ground state.
• inert state.
• excited state.
• radiation-emitting state.

What element has this electron configuration?

• hydrogen

• helium

• lithium

• beryllium

Tags

NGSS.HS-PS1-1

What element has this orbital notation?

• lithium

• beryllium

• boron

• carbon

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What element has this electron configuration?

• boron

• carbon

• nitrogen

• oxygen

Tags

NGSS.HS-PS1-1

Which element is represented by this orbital notation?

• carbon

• nitrogen

• oxygen

• fluorine

Tags

NGSS.HS-PS1-1

All orbitals of equal energy are occupied by one electron before any single orbital is occupied by a second electron.

• Aufbau principle
• Pauli exclusion principle
• Hund’s rule
• Core Notation