Quick Configs
Backtracking Basics
Orbitals in Overdrive
Noble Gas Know-How
Electron Roulette
100

Give the electron configuration of hydrogen.

1s1

100

What element is symbolized by 1s2 2s2 2p6 3s1?

Na

100

Give the electron configuration of scandium.

1s2 2s2 2p6 3s2 3p6 4s2 3d1

100

Give the noble gas configuration of boron.

[He] 2s2 2p1

100

Sodium loses 1 electron. What element is sodium isoelectronic with?

Neon

200

Give the electron configuration of lithium.

1s2 2s1

200

What element is symbolized by 1s2 2s2 2p6 3s2 3p3?

P

200

Give the electron configuration of copper.

1s2 2s2 2p6 3s2 3p6 4s2 3d9

200

Give the noble gas configuration of potassium, K.

[Ar] 4s1

200

A d sublevel can hold a maximum of _____ electrons, with only _____ electrons in each orbital.

10, 2

300

Give the electron configuration of helium.

1s2

300

What element is symbolized by 1s2 2s2 2p6 3s2 3p6 4s1?

K

300

Give the electron configuration of zinc.

1s2 2s2 2p6 3s2 3p6 4s2 3d10

300

Give the noble gas configuration of sodium, Na.

[Ne] 3s1

300

The n=_____ shell is the lowest in energy that may contain d-orbitals.

3
400

Give the electron configuration of neon.

1s2 2s2 2p6

400

What element is symbolized by 1s2 2s2 2p6 3s2 3p6 4s2 3d8?

Ni

400

Give the electron configuration of Fe+3

1s2 2s2 2p6 3s2 3p6 4s2 3d3

400

Give the noble gas configuration for I-1.

[Kr] 5s² 4d¹⁰ 5p⁶

400

Identify the element. 1s2 2s2  2p6  3s2  3p6 (-2 charge) 

S-2

500

Give the electron configuration of carbon.

1s2 2s2 2p2

500

What element is symbolized by 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5?

Br

500

Give the electron configuration for Ag+1.

1s2 2s2 2p6 3s2 3p6 4s2 3d10 4s2 3d10 4p6 5s2 4d8

500

Give the noble gas configuration for Pb+2

[Xe] 6s² 4f¹⁴ 5d¹⁰

500

How do electrons give off light? Explain thoroughly what happens.

When an electron gains energy, it moves into a higher energy level. This is known as an "excited state". When the electron returns to its original energy level, or "ground state", energy is released as light.
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