Periodic Trends/Electrons Review

Periodic Trends

100

Definition for Atomic Radius

Size of an atom

200

The amount of energy required to remove an electron refers to which trend?

Ionization energy

300

The ability to gain an electron refers to which trend?

Electronegativity

400

The only group on the periodic that has an electronegativity of 0

Group 18, noble gases

500

What is the main reason why each trend moves in their directions?

It is because of their shielding (and also their valence electrons)

Periodic Trends

100

Rank the following elements by increasing atomic radius (least to greatest): 

Carbon, aluminum, oxygen, and potassium

O, C, Al, K

200

Rank the following elements by increasing electronegativity: sulfur, oxygen, neon, and aluminum

Ne, Al, S, O

300

Rank the following by ionization energy: helium, phosphorus, and silicon.

Si, P, and He

400

Which has the largest ionization energy: S,Cl, or I? 

Cl

500

What is the smallest atom in period 5? Why?

Xe. The trend for atomic radius increases to the left. Xe is the right most element, making it the smallest.

Ions and Ionic bonds

100

In ionic bonds, what kind of element give away electrons, and what kind of element accepts electrons?

Metals give, Non-metals accept

200

Each ionic bonded compound needs to have a charge of ... when two or more elements bond

0/neutral charge

300

If Nitrogen were to become charged, what value charge will it have?

EX: -1, +2, -1

-3 charge

400

Barium would have a _____ charge when becoming an ion

+2 charge

500

When barium and Nitrogen combine, they have a chemical formula of...

Ba₃N₂

Ionic Bonding Cont'd

100

In ionic bonding, what are the superscript numbers used for and what are the subscript numbers used for?

Superscript numbers: charges

Subscript numbers: amounts of ions

200

How many sodiums can bond with an oxygen if both are ions?

two sodiums can bond with one oxygen

Na⁺ and O^2-

300

How many sodiums can bond with an oxygen if both are charged

Give the chemical formula at the end

Ex: Na2O2, Na3O4...

two sodiums can bond with one oxygen

Na₂O

400

If Rubidium has a +1 Charge and P has a -3 charge, what will the chemical formula be?

Rb₃P

500

How many Calciums can bond with Phosphorus when both elements have charge?

3 Calciums, 2 Phosphorus

Ca₃P₂

Ionic bonding naming

100

For binary ionic compounds, the last element needs to end in...

-ide

EX: Sodium ChlorIDE

200

Name this compound

LiBr

Lithium Bromide

300

Name this compound

MgF₂

Magnesium Fluoride

400

For transition metals, the number of the charged species needs to be in the name

EX: Iron (III) Chloride is Fe³⁺ combined with Cl^-

What would be the name for an ionic compound with Ni²⁺ and Br^-

Nickel (II) Bromide

because Ni²⁺ has a charge of +2

500

This Compound does not follow -IDE because it is a ternary compound, however we can still name it.

Name this compound

K₃PO₄

Look to the back of your periodic table for PO₄^3-

Potassium Phosphate

(Even though this has more than 2 elements, you still do not add di-, tri-, etc.)

Putting it all together (Ionic compound)

100

For the following ions, write the formula and name the compound accordingly

(Subscripts do matter!)

Li⁺ and Cl^-

LiCl

Lithium chloride

200

For the following ions, write the formula and name the compound accordingly

(Subscripts do matter!)

Sr²⁺ and F^-

Strontium Fluoride

SrF₂

300

For the following ions, write the formula and name the compound accordingly

(Subscripts do matter!)

Co³⁺ (transition metal) and S^2-

Cobalt (III) Sulfide

Co₂S₃

400

For the following ions, write the formula and name the compound accordingly

(Subscripts do matter!)

Ga³⁺ and PO₄^3-

Gallium Phosphate

GaPO₄

500

For the following ions, write the formula and name the compound accordingly

(Subscripts do matter!)

Cu⁺ and SO₄^2-

Copper (I) Sulfate

Cu₂SO₄

If we have time

100

For the following names, write the correct chemical formulas

Strontium Phosphate

Sr₃(PO₄)₂

200

For the following names, write the correct chemical formulas

Iron (II) Hydroxide

Fe(OH)₂

300

For the following names, write the correct chemical formulas

Tin (IV) Carbonate

Sn(CO₃)₂

400

For the following names, write the correct chemical formulas

Ammonium Thiosulfate

(NH₄)₂S₂O₃

500

For the following names, write the correct chemical formulas

Lead (IV) Phosphate

Pb₃(PO₄)₄

If we REALLY have time (EX Credit)

100

Classify this compound as Ionic or Covalent,

Descriptions: very brittle, dissolves in water, high melting point, contains ions

Ionic compound

200

Classify this compound as Ionic or Covalent

Description: Brittle, Dissolves in water, Very Low melting point

Covalent compound

300

Classify this compound as Ionic or Covalent

Descriptions: White pellets, crumbly, dissolves in water, does not melt

Ionic Compound

400

Rank the following ions from smallest to largest based on shielding.

Aluminum, Barium, Boron, Indium

Boron, Aluminum, Indium, Barium

500

A student makes a claim that Ammonium Chloride NH₄Cl is an covalent compound because it is made of only non-metals.

Is this student true in their statement? If not, what is a counter-argument you will make?

Even though Ammonium Chloride is made of non-metals, it is still made of both positive and negative ions. 

NH₄⁺ being the positive ion (cation)

Cl^- being the negative ion (anion)