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Electron Configuration and Orbital Theory

Electron Configuration and Orbital Theory

Assessment

Interactive Video

Chemistry

9th - 10th Grade

Practice Problem

Hard

Created by

Mia Campbell

FREE Resource

This video tutorial explains how to write the electron configuration for Krypton (Kr). It begins by identifying the number of electrons in Krypton using the periodic table. Two methods for determining electron configuration are discussed: the diagonal rule and using the periodic table blocks. The video provides a step-by-step guide to filling the electron orbitals, starting from 1s to 4p, and concludes with tips on writing configurations correctly.

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9 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the atomic number of Krypton, and how does it relate to its electron count?

Atomic number is 10, which equals the number of electrons.

Atomic number is 36, which equals the number of electrons.

Atomic number is 54, which equals the number of electrons.

Atomic number is 18, which equals the number of electrons.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which rule can be used to determine the electron configuration by following arrows?

Periodic Rule

Orbital Rule

Electron Rule

Diagonal Rule

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the maximum number of electrons that the 's' orbital can hold?

8

2

4

6

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

After filling the 3d orbital, which orbital do we fill next for Krypton?

4s

4p

5s

3p

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many electrons can the 'd' orbital hold?

12

6

8

10

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the electron configuration notation for Krypton?

[Ar] 4s2 3d10 4p6

[Ne] 3s2 3p6 4s2

[He] 2s2 2p6 3s2

[Ar] 3d10 4s2 4p6

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which block of the periodic table is filled last in Krypton's electron configuration?

d block

p block

s block

f block

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