Chapter 5 section 1 & 2

Period
A horizontal row of blocks in the periodic table is called a(n)
Very stable elements
Krypton, atomic number 36, is the fourth element in a Group 18. Group 18 has
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Metals
Those elements that are good conductors of electricity are
Properties
Mendeleev did not always list elements in his periodic table in order of increasing atomic mass because he grouped together elements with similar
Occurred at repeated intervals called periods
Mendeleev’s table was called periodic because the properties of the elements
Gas
Strontium (Sr) is a
Halogens
Refer to the periodic table. To which group do fluorine and chlorine belong?
Halogens
Nonmetallic elements in Group 17 that react with metals to form salts are called
Period 4
In what period is calcium?
Group 2
Magnesium belongs to
1 electron in the s orbital
The outer electron configuration of the alkali metals has
Are highly reactive elements
The alkali metals are found on Earth only in compounds because they
Mendeleev
The person whose work led to a periodic table based on increasing atomic number was
Atomic number
Mendeleev noticed that properties of elements usually repeated at regular intervals when the elements were arranged in order of increasing
Metalloid
Arsenic (As) is a
Mendeleev
The idea of arranging the elements in the periodic table according to their chemical and physical properties is attributed to
Alkali metals
Refer to the periodic table. To which group do lithium and potassium belong?
Undiscovered elements
Mendeleev predicted that the empty spaces in his periodic table represented
Properties
Elements in a group or family in the periodic table can be expected to have similar
S and p orbitals
The electron configuration of the main-group elements includes:
Numbers
The periodic law states that the physical and chemical properties of elements are periodic functions of their atomic
Lanthanides
The f block contains:
11
The atomic number is lithium, the first element in Group 1, is 3. The atomic number of the second element in this group is
Alkali metals
Highly reactive metallic elements that react with water to form hydrogen gas and alkaline solutions are called
P=5 B =D G =12
[Kr] 5s^2 4d^10
P=2 B=P G=7
[He] 2s^2 2p^5
P=3 B=S G=1
[Ne] 3s^1
P=4 B=P G=14
[Ar] 4s^2 3d^10 4p^2
P=4 B=D G=9
[Ar] 4s^2 3d^7
The S, P, D, and F
Four blocks found in the periodic table?
4s^2 3d^8
Write the outer electron configuration for Group 10 element in the 4th period
3s^2 3d^10 3p^6
Write the outer electron configuration for the Group 18 element in the 3rd period
5s^2 3d^6 5p^3
Write the outer electron configuration for the Group 15 element in the 5th period
4s^2 3d^5
Write the outer electron configuration for the Group 7 element in the 4th period
2s^2
Write the outer electron configuration for the Group 2 element in the 2nd period
B
Boron
N
Nitrogen
Cl
Chlorine
Li
Lithium
S
Sulfur
P
Phosphorous
Fe
Iron
Ag
Silver
He
Helium
U
Uranium
Kr
Krypton
Pb
Lead
Hg
Mercury
O
Oxygen
Ni
Nitrogen
H
Hydrogen
Pt
Platinum
Au
Gold
Zn
Zinc
As
Arsenic
K
Potassium
Cu
Copper
Mg
Magnesium
Sn
Tin
I
Iodine
C
Carbon
Ca
Calcium
Al
Aluminum
Ne
Neon
W
Tungsten
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