Final Project Part 2.

Atomic Radius

An interactive quiz by: Cameron carranza

The atomic radius of a chemical element is a measure of the size of its atom, usually the mean or typical distance from the center of the nucleus to the outermost isolated electron.

Multiple Choice

What is the Atomic Radius?

• the number of valence electrons in an atom

• is a measure of the size of its atom

• the negative charge of the atom

• the positive charge of the atom

Multiple Choice

Atomic Radius does what across the periodic table?

• Decrease

• Stay the Same

• Increase

​Across the periodic table

The atomic radius actually decreases going across the periodic table from left to right. This is because nuclei have greater nuclear pull which pulls electrons closer.

Multiple Choice

Atomic Radius does what as it goes down the periodic table?

• Stays the same

• Decreases

• Increases

​Down the periodic table

As you go down the periodic table the atomic radius actually increases. This is because as you go down there is a greater number of energy shells, indicated by the period number.

Multiple Choice

An atom of which element has the largest radius?

• Si

• Zn

• Fe

• Mg

​why fe?

Since Fe F e has the most electrons, its outermost shell will be bigger than the three. Therefore, it will have the largest radius.

Multiple Choice

How do the atomic radius and metallic properties of Na compare to the atomic radius of and metallic properties of P?

• Sodium has a smaller atomic radius and is less metallic

• Sodium has a larger atomic radius and is more metallic.

• Sodium has a smaller atomic radius and is more metallic

• Sodium has a larger atomic radius and is less metallic

​The element P

The element P has an atomic radius of 195 pm, while the element Na has an atomic radius of 277 pm. This is why the correct answer would be Sodium has a larger atomic radius and is more metallic.

Multiple Choice

Which list of elements from Group 2 on the Periodic Table is arranged in order of increasing atomic radius?

• Ba,Ra,Sr

• Sr,Ra,Ba

• Be,Mg,Ca

• Ca,Mg,Be

Multiple Choice

An element that is malleable and a good conductor of heat and electricity could have an atomic number of

• 35

• 18

• 6

• 29

Multiple Choice

 

The elements in Period 5 on the Periodic Table are arranged from left to right in order of

• Decreasing atomic number

• Increasing atomic mass

• Increasing atomic number

• Decreasing atomic mass

Here is a picture of the perioidc table so you can see the atomic number increases as it goes right across the table

Periodic Table

Multiple Choice

As atomic number increases within Group15 on the Periodic Table, atomic radius

• Increases, only

• Decreases, then increases

• Increases, then decreases

• Decreases, only

Multiple Choice

The atomic size depends on

• Valence shell electronic configuration

• Atomic Number

• Period Number

• Group Number