Understanding Atomic Size and Trends

Understanding Atomic Size and Trends

Assessment

Interactive Video

Chemistry

9th - 10th Grade

Practice Problem

Hard

Created by

Jennifer Brown

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary reason that makes measuring the exact size of an atom challenging?

Atoms are too small to be seen.

Atoms have a fixed size.

Atoms are not spherical.

The electron cloud is defined by probability.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is a non-bonding atomic radius determined?

By measuring the distance between bonded atoms.

By measuring the distance between non-bonded neighboring atoms.

By using the atomic number.

By calculating the volume of the electron cloud.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What pattern is observed in atomic radii as you move across a period from left to right?

Atomic radius fluctuates randomly.

Atomic radius remains constant.

Atomic radius decreases.

Atomic radius increases.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which element would have a larger atomic radius: cesium or lithium?

It depends on the temperature.

Both have the same atomic radius.

Lithium

Cesium

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the principal quantum number as you move down a group in the periodic table?

It increases.

It remains the same.

It fluctuates.

It decreases.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why do atoms get larger as you move down a group in the periodic table?

The number of protons increases.

The outermost electrons are in larger orbitals.

The atomic mass increases.

The number of neutrons increases.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the effect of shielding on valence electrons?

It increases the attraction to the nucleus.

It decreases the attraction to the nucleus.

It has no effect on the attraction to the nucleus.

It makes the electrons more reactive.

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