Periodic Trends; Atomic Radius

Periodic Table Trends

Do NOW.

What did i learn yesterday, what i will learn today, why are we learning this periodic trend?


70% of the periodic table is mostly what?



The diagonal section of the table is called what?




What are the three sections of the periodic table?


;

What is the atomic mass of

Chlorine,

Iodine

Bromine?

Periodic Table Day 2 - Trend for Atomic Radius

Multiple Choice

Use the period trend in atomic size to choose the LARGEST atom:

K, Co, Ge, Br

• K

• Co

• Ge

• Br

Periodic Table Day 2 - Trend for Atomic Radius

Multiple Choice

Use the group trend in atomic size to choose the LARGEST atom:

O, S, Se, Te

• O

• S

• Se

• Te

Increasing Atomic Radius

Increasing Atomic Radius

Cation Radius < Neutral < Anion Radius

Increasing Ionization Energy

Increasing Ionization Energy

Decreasing Electronegativity

Increasing Electronegativity

Multiple Choice

Of the halogens, which has the smallest radius?

• F

• Br

• He

• At

Open Ended

Explain the trend of atomic radius in a period.

Multiple Choice

Atomic radius ________ in a group from top to bottom.

• remain sam

• increases

• decreases

Click here for an explanation of the Atomic Radius Trend

Open Ended

Why does the Atomic Radius increase as you go down a group but decrease as you go across a period?

Multiple Choice

Which of the following has a greater Atomic Radius? (Refer to your periodic table)

• Carbon

• Aluminum

• Potassium

• Oxygen

Multiple Choice

Which periodic group has the smallest atomic radius?

• Alkali metals
• Halogens
• Noble Gases
• Transition metals

Multiple Choice

Which of the following elements is most likely to have similar properties to those of sodium (Na)?

• Magnesium (Mg)

• Sulfur (S)

• Francium (Fr)

• Titanium (Ti)

Multiple Select

The radius of an atom is determined by:

(check all that apply)

• the amount of space between the nucleus and the electrons

• the number of protons in the atom

• the number of neutrons in the atom

• the mass of the atom

Multiple Choice

Which of the following will have a larger radius than Zinc?

• Gallium

• Aluminum

• Magnesium

• Strontium

Multiple Choice

Use the period trend in atomic size to choose the LARGEST atom:

K, Co, Ge, Br

• K

• Co

• Ge

• Br

Multiple Select

The radius of an atom is determined by:

(check all that apply)

• the amount of space between the nucleus and the electrons

• the number of protons in the atom

• the number of neutrons in the atom

• the mass of the atom

Multiple Choice

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.

Multiple Choice

Use the group trend in atomic size to choose the LARGEST atom:

O, S, Se, Te

• O

• S

• Se

• Te

Multiple Choice

As you move down the periodic table atoms get bigger.  This is because ____________.

• The atoms have more mass.
• The atoms have more protons.
• The atoms have more energy levels
• The atoms have more neutrons

Multiple Select

The group trend in atomic size is caused by:

(check all that apply)

• increasing number of energy levels

• increasing the shielding effect

• increasing the nuclear charge

• increasing mass number

Multiple Choice

Use the period trend in atomic size to choose the LARGEST atom:

K, Co, Ge, Br

• K

• Co

• Ge

• Br

Multiple Choice

Use the group trend in atomic size to choose the LARGEST atom:

O, S, Se, Te

• O

• S

• Se

• Te

Multiple Choice

Which of the following will have a lower ionization energy than Scandium (Sc)?

• Helium (He)

• Titanium (Ti)

• Calcium (Ca)

• Magnesium (Mg)

Multiple Select

The group trend in atomic size is caused by:

(check all that apply)

• increasing number of energy levels

• increasing the shielding effect

• increasing the nuclear charge

• increasing mass number

Multiple Choice

Which of the following will have a higher electronegativity than arsenic (As)?

• Carbon (C)
• Neon (Ne)
• Antimony (Sb)
• Germanium (Ge)