# Chem (A)-Elements and the Periodic Table-PHS-Bell

## 88 terms · Set to study for the (A) Chemistry Test on Unit 6 "Elements and The periodic Table" at Plum Senior High School with Ms.Bell. If the answer is the name of a specific element, only the symbol is needed as the answer.

### Average Atomic Mass

______ = ((%abundance of Isotope 1 /100)(Mass of Isotope 1))+((%abundance of Isotope 2 /100)(Mass of Isotope 2))

### % Abundance of Isotope 1

Average Atomic Mass = ((__________ /100)(Mass of Isotope 1))+((%abundance of Isotope 2 /100)(Mass of Isotope 2))

### 100

Average Atomic Mass = ((%abundance of Isotope 1 /____)(Mass of Isotope 1))+((%abundance of Isotope 2 /100)(Mass of Isotope 2))

### Mass of Isotope 1

Average Atomic Mass = ((%abundance of Isotope 1 /100)(________))+((%abundance of Isotope 2 /100)(Mass of Isotope 2))

### 85.5 Amu

Rubidium has two common isotopes, Rb-85 and Rb-87. If the abundance of Rb-85 (84.91 amu) is 72.2% and the abundance of Rb-87 (86.91amu) is 27.8%, what is the average atomic mass of rubidium?

### Ga

68.9257 amu is the mass of 60.4% of the atoms of an element with only two naturally occurring isotopes. The atomic mass of the other isotope is 70.9249 amu. What is the element?

### 7.5%,92.5%

Lithium has two stable isotopes, Li-6 with an atomic mass of 6.015 amu and Li-7 with an atomic mass of 7.016 amu. What is the percent abundance of each of these isotopes?

### 70.93 Amu

Gallium has two isotopes, one of which is 69Ga with an atomic mass of 68.9257 amu and an abundance of 60.12%. Calculate the atomic mass of the other isotope.

### Ga-71

Gallium has two isotopes, one of which is 69Ga with an atomic mass of 68.9257 amu and an abundance of 60.12%. Write the Nucleur symbol of the Isoptope. (X-# Form)

Repetitive

### Periodicity

Predictability among the elements

### 112

There are presently _______ known elements.

Some elements are naturally occurring while others are _____.

### Dimitri Mendeleev

Father of the Periodic Table

### Dimitri Mendeleev

Russian Chemist who wanted to organize the elements by their properties.

### 3

How many gaps (unfilled spaces) were on Mendeleev's Original Periodic Table

### A

Which group tends to be Malleable and Ductile?
(Mult. Choice~~~A: Metals~~~B:NonMetals~~~~C:Metalloids)

### A

Which group tends to conduct heat and electricity?
(Mult. Choice~~~A: Metals~~~B:NonMetals~~~~C:Metalloids)

### B

Which group tends to be brittle?
(Mult. Choice~~~A: Metals~~~B:NonMetals~~~~C:Metalloids)

### B

Which group tends to have lower densities?
(Mult. Choice~~~A: Metals~~~B:NonMetals~~~~C:Metalloids)

### A

Which group tends to be shiny?
(Mult. Choice~~~A: Metals~~~B:NonMetals~~~~C:Metalloids)

### C

Which group tends to have properties that are similar to the properties of the other two groups?
(Mult. Choice~~~A: Metals~~~B:NonMetals~~~~C:Metalloids)

### A

Which group tends to have high melting points?
(Mult. Choice~~~A: Metals~~~B:NonMetals~~~~C:Metalloids)

### Period

A row on the periodic table.

### Group

A column on the periodic table.

### Valence Electrons

Elements in the same group have the same number of ____.

### Alkali Metals

Group 1 on the Periodic Table

### Alkaline Earth Metals

Group 2 on the Periodic Table

### Inner Transition Metal

An atom that has an electron configuration ending in either 4s or 5s is a(n) ______.

### Inner Transition Metals

Elements that are drawn separately at the bottom of the periodic table.

### Transition Metal

An atom that has an electron configuration ending in either 3d, 4d, 5d, or 6d, is a _______.

### Transition Metals

Elements in groups 3-12 of the periodic table.

### Halogens

Elements in group 17 of the periodic table.

### Noble Gases

Elements in group 18 of the periodic table.

### 1

How many valence electrons do alkali metals have?

### Fr

What is the most reactive Alkali Metal?

### Li

Which Alkali Metal has the Smallest Atomic Radius?

### 2

How many valence electrons do alkaline earth metals have?

### Ra

Which is the most reactive alkaline earth metal?

### Be

Which Alkaline Earth Metal has the smallest Atomic Radius?

### 7

How many valence electrons do Halogens have?

### Fl

What is the most reactive Halogen?

### At

What Halogen has the largest atomic radius?

### True

Atoms are VERY stable when their outermost P.E.L. is filled (T/F)

### Eight

Atoms always want to have ____ electrons in their outermost PEL.

### Octet

Atoms always want to fill their outer PEL or have an ____ .

### Noble Gases

The ____ usually do NOT bond with other atoms

### Noble Gases

The ____ usually exist freely in nature because they naturally have an octet.

### True

Elements will usually take the shortest path to gaining an octet usually by either losing or gaining electrons (T/F)

### Isoelectronic

When two different elements have the same electron configuration.

### Alkali Metals

The most reactive of all metals

### +1

Alkali metals usually will have a ___ charge.

### Kerosene

Alkali metals are usually stored in ____.

### Alkaline Earth Metals

Do alkali metals or alkaline earth metals have higher melting points.

### +2

Alkaline earth metals usually have a ___ charge.

### Halogens

The most reactive group of nometals.

### -1

Halogens usually have a ___ charge.

### Gases

Florine and Chlorine are ___ at room temperature

### Liquids

Iodine and Bromine are ___ at room temperature

### Solid

Astatine is known to be a ___ at room temperature

### Noble Gases

Originally called the inert gases

### Inner Transition Metals

Rare Earth Metals

### Transition Metals

It is not easy to predict how many electrons the ____ will lose or gain

### Decreases

As you go left to right across a period the atomic size _____ .

### Inceases

As you travel down a group the atomic size ____ .

### Larger

A negative ion is ____ than its parent atom.

### Smaller

A positive ion is ____ than its parent atom.

### More

A negative ion has ____ valence electrons than its parent atom.

### Less

A positive ion has ___ valence electrons than its parent atom.

### True

K form a K+ ion because it needs to lose one electron in order to have an octet (T/F)

### F, C, Li

Rank the following smallest to largest AR based on trends- Li, C, F

### Li, Na, K

Rank the following smallest to largest AR based on trends- Li, Na, K

### O, P, Ge

Rank the following smallest to largest based on trends- Ge, P, O

### Increases

As you go left to right across the periodic table the Ionization energy ____.

### True

The farther right on the Periodic Table an atom is located the harder it is to remove valence electrons. (T/F)

### Decreases

As you go down a group the Ionization Energy generally ____ .

### Alkali Metals and Noble Gases

Which two groups are the extremes of ionization energy trends.

### Larger

The second ionization energy is usually ____ than the first ionization energy.

### Increases

As you go left to right across the periodic table the electron affinity generally _____.

Higher ___ = Lower Ionization Energy

### Decreases

As you go down a group the Electron Affinity usually ____ .

### True

The further down on the periodic table an element is the less control the nucleus has over the valence electrons.

### Ionization Energy

How much an atom wants to lose an electron is _____ .

### Electron Affinity

How much an atom wants to gain an electron is _____ .

### Noble Gases

An exception to the general trend in electron affinity.

### Electronegativity

A measure of how much an electron hog an atom is.