Atomic Radii

As you move across the periodic table atoms tend to get smaller because, ______________.

• the atoms have more mass.

• the atoms have less mass

• the atoms have more protons.

• the atoms have less electrons.

Tags

NGSS.HS-PS1-1

The Periodic Table of the Elements is useful for revealing patterns and trends in the elements. Which statement accurately describes a pattern in the size of atomic radii in the Periodic Table of the Elements?

• Atomic radii decrease from left to right across a period and decrease from top to bottom in a group.

• Atomic radii increase from left to right across a period and increase from top to bottom in a group.

• Atomic radii decrease from left to right across a period and increase from top to bottom in a group.

• Atomic radii increase from left to right across a period and decrease from top to bottom in a group.

Tags

NGSS.HS-PS1-1

Which of these elements has the greatest atomic radius? 

• H

• N

• Cl

• Cs

Atomic radii trends is . . . .

• generally decrease along each period of the table, and increase down each group.

• generally increase along each period of the table, and increase down each group.

• generally increase along each period of the table, and decrease down each group.

• generally decrease along each period of the table, and decrease down each group.

The most important measurement when you measure the atomic size

• Atomic Radius

• Ionization Energy

• Electronegativity

• Electron Afinity

• Oxidation Number

Which element has bigger atomic radii?

• Beryllium is bigger than Fluorine

• Oxygen is bigger than Sulphur

• Litihium is bigger than Sodium

• Phosphorus is bigger than Bromine

Tags

NGSS.HS-PS1-1

Which element has smaller atomic radii?

• Beryllium is smaller than Fluorine

• Sulphur is smaller than Oxygen

• Litihium is smaller than Sodium

• Potassium is smaller than Bromine

Tags

NGSS.HS-PS1-1

Which element will have the largest atomic radius?

• Ne

• Li

• Cs

• Rn

Tags

NGSS.HS-PS1-1

Atomic radius generally increases as we move __________.  

• down a group and from right to left across a period 

• up a group and from left to right across a period 

• down a group and from left to right across a period 

• up a group and from right to left across a period 

Which of the following elements has the smallest atomic radius?

• A) Helium (He)

• B) Neon (Ne)

• C) Argon (Ar)

• D) Krypton (Kr)

Tags

NGSS.HS-PS1-1