Periodic Trends - Atomic Radius And Ionic Radius Worksheet With Answers (Page 4 of 5) in pdf

Periodic Trends - Atomic Radius And Ionic Radius Worksheet With Answers Page 4

graph annotation:

On the atomic radius versus atomic number graph, do the following:

a. Label the points on the graph that represent an element with a valence conﬁguration of

(1 valence e

b.Label the points on the graph that represent an element with a valence conﬁguration of

(8 valence e

) 

sublevel.  

c. Circle the points on the graph that represent the

sublevel and the

d. Draw a

vertical line

through the points on the graph that represent a ﬁlled valence shell.

period

4d sublevel

3d sublevel

questions:

1. How many sections was the atomic radius graph divided into?

5 sections

2. On the periodic table, the ﬁrst 54 elements are found in 5 horizontal rows known as periods.

3. Each section of the graph represents a

period

or horizontal row on the periodic table.

4. What is the trend in atomic radius within each section of the graph (how does atomic radius change with atomic number)?

atomic radius decreases

5. As you move across a period on the periodic table, what happens to the atomic radius of the elements?

atomic radius decreases across a period, form left to right

6. Are electrons being added to higher energy levels as you move from left to right across a period? Or, are they being

added to the same energy level? What is responsible for the decrease in atomic radius across a period?

across a period, electrons are added to the same energy level; number of protons in the nucleus affects the radius

Periodic Trends - Atomic Radius And Ionic Radius Worksheet With Answers Page 4