U2 Periodic Trends

Periodic Table

By Craig LaPerriere

Periodic Table Trends

Multiple Choice

What is a group

• Up and down row on the table

• Up and down column on the table

• Side to side row on table

• Side to side column on the table

The arrows point to the largest atomic radius.

Multiple Choice

What is a period

• Up and down row on the table

• Up and down column on the table

• Side to side row on table

• Side to side column on the table

Multiple Choice

Which periodic group has the smallest atomic radius?

• Alkali metals
• Halogens
• Noble Gases
• Transition metals

Multiple Choice

What group is carbon in?

• 1

• 2

• 13

• 14

• 15

Multiple Choice

The atom with the largest atomic radius in Group 18 is - 

• Ar
• He
• Kr
• Rn

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 nuetrons

Multiple Choice

Where are the alkli metals more reactive?

• Top of the group?

• Bottom of the group?

Multiple Choice

Which atom has the largest atomic radius?

• potassium

• rubidium

• francium

• cesium

Multiple Choice

What causes the increase in reactivity in an alkli metal?

• The increase in protons

• The decrease in protons

• The increase in atom size

• The decrease in atom size

Multiple Choice

Are the alkline earth metals more or less reactive than the alkali metals

• More

• Less

These lose electrons to have a full outer shell.

Multiple Choice

Where are the transition metals located

• Left side of table

• Top of table

• middle of table

• right side of table

These gain electrons to have a full outer shell.

Multiple Choice

Which is a transition metal?

• Aluminum

• Calcium

• Sodium

• Chromium

Groups 1-14 tend to form cations (lose e-).

Groups 15-17 tend to form anions (gain e-).

Group 18 does not form ions.

Multiple Choice

Why are halogens so reactive

• Need 7 valence electrons

• Need to lose 1 electron to be stable

• Need to add 1 electron to be stable

• They are super large atoms

Multiple Choice

What is the most reactive Halogen

• F

• Cl

• Br

• I

Anions as always larger than cations.

If comparing with other cations/anions, the trend is to the left and down.

Multiple Choice

Which of the following ions is larger

• Ca²⁺

• Mg²⁺

Multiple Choice

Why are noble gases not reactive

• Too few electrons

• Too many electrons

• They have a full set of electrons

• They need more electrons

Multiple Choice

Which is larger:
P or P^-3

• P
• P^-3
• both are same size

Multiple Choice

when atom lose an electron (Positive) the size of atom

• Will be great

• Increase

• No change

• Will be small

Multiple Choice

Lanthanides have electrons in an F sublevel

• Yes

• No

Multiple Choice

when atom gain an electron (negative) the size of atom

• Increase

• Decrease

• No change

• Small

​due to the number of protons and neutrons

Multiple Choice

An atom gain electron

• Cation

• Anion

• Positive ion

• Isotope

Multiple Choice

Actinides are radioactive because

• They are so big

• They have more protons than electrons

• they have more neutrons than electrons

• they have more neutrons than protons

Multiple Choice

an atom lose electron is

• Cation

• Anion

• Isotope

• compound

Arrows point to the greatest ionization energy.

Multiple Choice

Put the following in order of increasing ionization energy:Neon, Lithium, Carbon

• Lithium, Carbon, Neon
• Carbon, Lithium, Neon
• Neon, Carbon, Lithium
• Lithium, Neon, Carbon

Multiple Choice

Which element has the greater ionization energy?

• Lead
• Silicon

Multiple Choice

Which element has the greater ionization energy?

• Strontium
• Boron

Multiple Choice

Which of the following sequences corresponds to a correct trend in ionization energy?

• Cl > S > P > Al
• Sr > Ca > Mg > Be
• Rb > K > Na > Li
• Rb > Sr > I > Xe

Arrows point toward increasing electronegativity. Noble gases have none!

Multiple Choice

Choose the set that goes from lowest to highest electronegativity?

• Cu, Mg, Sr, Ca
• F, Cl, Br, Si
• Cs, Rb, Ca, Mg
• Zn, Cd, Ag, Cu

Multiple Choice

Which has the greater EN: 
Cl or Al?

• Cl
• Al

Multiple Choice

Put these in increasing order:
F, N, B

• B < N < F
• B < F < N
• N < F < B
• F < N < B

Multiple Choice

Which has the greater EN: 
H or F?

• H
• F

Multiple Choice

Which has the greater EN: 
N or C?

• C
• N