Electron Shell

Electron shells and subshells are energy levels surrounding the nucleus of the atom.

• True

• False

The electron shell n = 1 is a higher energy electron shell than n = 4.

• True

• False

It is possible for an electron to exist between shell n = 1 and shell n = 2.

• True

• False

The purpose of the flame in a flame test is to

• promote electrons from their ground state to a higher energy excited state.

• cause atoms to combust (burn).

• mix the flame colour with the colour of atoms.

Tags

NGSS.HS-PS1-2

The flame colour produced during a flame test is due to

• electrons moving into higher energy levels.

• electrons returning to their ground state from higher energy levels.

• the combustion (burning) of atoms.

• the mixing of the flame colour with colour of the atoms.

This diagram shows an electron being promoted to a 3rd excited energy level. What do the down arrows tell us about how an excited electron will return to its ground state?

Tags

NGSS.HS-PS4-1

This spectrum is produced by

• white light being passed through a prism.

• coloured light being passed through a prism.

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

Emission spectra from flame tests only have a few coloured lines on a black background because

• there are only a few energy transitions within each atom that equal the energy of visible light.

• all energy transitions in atoms equal the energy of visible light but each one is appears for a short time.

• spectroscopes can only show a small number of colours at one time.

• the human eye can only detect a small number of colours at one time.

Tags

NGSS.HS-PS4-3

This ionisation energy graph is for

• Sodium (Na) with an electron configuration of 2, 8, 1.

• Sodium (Na) with an electron configuration of 1, 8, 2.

• Lithium (Li) with an electron configuration of 2, 1.

• Potassium (K) with an electron configuration of 2, 8, 8, 1.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The electron subshell configuration of oxygen, O, is

• 1s²2s²2p⁴

• 1s²2p⁶

• 1s²2s²2p²3s²

• 1s²2s²3s²4s²

Tags

NGSS.HS-PS1-1