Valence Electrons and Radon

Valence Electrons and Radon

Assessment

Interactive Video

Chemistry

9th - 10th Grade

Hard

Created by

Liam Anderson

FREE Resource

The video tutorial explains how to write the Lewis structure for Radon (Rn) by determining its valence electrons using the periodic table and electron configuration. Radon, a noble gas in group 18, has eight valence electrons. The tutorial demonstrates placing these electrons around the element symbol in pairs to complete the Lewis structure. The video also highlights the importance of understanding electron configuration to verify the number of valence electrons.

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8 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in writing the Lewis structure for an element?

Identify the number of valence electrons

Determine the number of protons

Find the atomic mass

Locate the element on the periodic table

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is the periodic table organized in terms of valence electrons?

By atomic mass

By atomic number

By groups with similar valence electrons

By alphabetical order

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which group does Radon belong to on the periodic table?

Group 18

Group 13

Group 1

Group 2

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many valence electrons does Radon have?

Two

Four

Six

Eight

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the exception to the rule that elements in Group 18 have eight valence electrons?

Krypton

Argon

Helium

Neon

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How are the valence electrons arranged around Radon in its Lewis structure?

In a triangular shape

Randomly scattered

In pairs around the symbol

In a single line

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the highest energy level used to determine the valence electrons in Radon's electron configuration?

Seventh energy level

Sixth energy level

Fifth energy level

Fourth energy level

8.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does the electron configuration confirm the number of valence electrons for Radon?

By indicating the number of protons

By identifying the highest energy level and its electrons

By listing the atomic mass

By showing the total number of electrons