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Name: ____________________________________________
1)
Which two elements have the most similar chemical properties?
A) K and S
2)
B) Rb 2S
B) 2-8-8-1
B) Mg
B) s2p 4
C) occupied principal energy levels
D) protons in the nucleus
C) protons
D) electron
B) Be, Mg, Ca
B) boron
B) 16
B) Period 3, Group 16
D) 1
C) 19, 23, 30, 36
D) 9, 16, 33, 50
C) Period 6, Group 15
D) Period 4, Group 15
C) increases
The pair of elements with the most similar chemical properties are
B) Ca and Br
C) Mg and Ca
D) Mg and S
Which electron configuration represents the first two elements in Group 2 of the Periodic Table?
B) 2-2 and 2-8-2
C) 2 and 1-1
D) 2-1 and 2-2
In the ground state, atoms of the elements in Group 15 of the Periodic Table all have the same number of
C) electrons in the valence shell
D) filled principal energy levels
Atoms of elements in a group on the Periodic Table have similar chemical properties. This similarity is most closely related to the
atoms'
A) atomic masses
B) number of principal energy levels
19)
D) aluminum
B) decreases
A) neutrons in the nucleus
B) occupied principal energy levels
18)
C) phosphorus
As the atoms of the metals of Group 1 in the ground state are considered in order from top to bottom, the number of occupied
principal energy levels
A) 2-8-7-2 and 2-8-8-2
17)
D) Li, Na, K
On the Periodic Table, an element classified as a semimetal (metalloid) can be found in
A) S and Ar
16)
C) B, Al, Ga
C) 18
B) 4, 20, 38, 88
A) remains the same
15)
D) s2p 6
Which sequence of atomic numbers represents elements which have similar chemical properties?
A) Period 2, Group 14
14)
D) B
Which group contains elements with a total of four electrons in the outermost principal energy level?
A) 3, 12, 21, 40
13)
C) Be
The properties of carbon are expected to be most similar to those of
A) 14
12)
D) 2-7-5
Which group contains elements with the greatest variation in chemical properties?
A) silicon
11)
C) 2-4
All the elements in Period 3 have the same number of
A) Li, Be, B
10)
D) CaS
Elements in a given period of the Periodic Table contain the same number of
A) principal energy levels
B) occupied sublevels
9)
C) CaCl2
C) s2p 2
A) neutrons in the nucleus
B) electrons in the outermost level
8)
D) 4
Which represents the correct electron configuration of the outermost principal energy level of a Group 14 element in the ground
state?
A) s2p 8
7)
C) 3
The element found in Group 13 and in Period 2 is
A) Al
6)
B) 2
Which represents the correct electron configuration of a Group 14 element in the ground state?
A) 2-3
5)
D) K and Ca
Which compound contains an alkali metal and a halogen?
A) RbCl
4)
C) K and Cl
How many halogens are in Period 3 of the Periodic Table?
A) 1
3)
B) K and Na
C) number of valence electrons
D) atomic numbers
Which of the following is the electron configuration of a Period 3 element?
A) 2-3
B) 2-8-9-2
C) 2-8-1
D) 2-1
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20)
Which two elements have the most similar chemical properties?
A) chlorine and sulfur
B) nickel and phosphorus
21)
C) sodium and potassium
D) aluminum and barium
In which category of elements in the Periodic Table do all of the atoms have valence electrons in the second principal energy
level?
A) the alkaline earth family
B) the alkali metals family
22)
C) Period 2
D) Group 2
The elements in Period 3 all have the same number of
A) sublevels containing electrons
B) principal energy levels containing electrons
23)
Which element is in Group 2 and Period 7 of the Periodic Table?
A) magnesium
24)
B) radon
B) N, O, and F
B) B, C, N
B) Ernest Rutherford
B) 1, 2, and 14
B) Li and Na
D) Henry Moseley
C) 1, 2, and 18
D) 2, 13, and 17
C) a 2p sublevel containing 2 electrons
D) 2 principal energy levels containing electrons
C) C and N
D) K and Ca
B) mass number
C) atomic mass
D) oxidation number
B) neutrons
C) protons
D) energy levels
The elements of Period 2 have the same
C) number of occupied sublevels
D) atomic number
An atom of an element has 28 innermost electrons and 7 outermost electrons. In what period of the Periodic Table is this element
located?
A) 5
37)
C) Dmitri Mendeleev
C) 1s22s22p 5 and [Ne]3s23p 5
D) 1s22s1 and 1s22s2
A) number of occupied principal energy levels
B) atomic mass
36)
D) K, Rb, Cs
In the Periodic Table of the Elements, all the elements within Group 16 have the same number of
A) valence electrons
35)
C) Ar, Kr, Br
In the modern Periodic Table, the elements are arranged according to
A) atomic number
34)
D) Hg, Br, and Rn
Which electron configuration represents the first two elements in Group 17 of the Periodic Table?
A) 1s22s2 and 1s22s22p 1
B) 1s22s22p 6 and [Ne]3s23p 5
33)
C) Al, Si, and P
Which two elements have chemical properties that are most similar?
A) Cl and Ar
32)
D) atomic numbers
The atoms of the elements in the ground state in Period 2 of the Periodic Table are similar in that the atoms all have
A) a 2s sublevel containing 2 electrons
B) 2 valence electrons
31)
C) oxidation states
Alkali metals, alkaline earth metals, and halogens are found respectively in Groups
A) 1, 2, and 17
30)
B) ionic charges
Who was credited with creating the first Periodic Table that organized the elements according to atomic mass?
A) John Dalton
29)
C) decreases
Which three elements have the most similar chemical properties?
A) O, N, Si
28)
B) increases
In which set do the elements exhibit the most similar chemical properties?
A) Li, Na, and K
27)
D) manganese
The chemical properties of elements are periodic functions of their
A) mass numbers
26)
C) radium
As the elements in the ground state in Period 3 are considered in order of increasing atomic number, the number of electrons in
the 2p sublevel
A) remains the same
25)
C) valence electrons
D) orbitals containing electrons
B) 2
C) 3
D) 4
C) 1s22s22p 1
D) 1s22s22p 3
What is the electron configuration of an atom of a Period 3 element?
A) 1s22s22p 63s1
B) 1s22s1
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38)
An atom of an element contains 20 protons, 20 neutrons, and 20 electrons. This element is
A) a noble gas
B) an alkaline earth metal
C) a halogen
D) an alkali metal