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Ch 4 Modern Chemistry Flashcards | StudBud
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Ch 4 Modern Chemistry
Ch 4 Modern Chemistry
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ch 4 Modern chem quizes
Flashcards
40 cards
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Questions
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Answers
1
Which is a wave property that electrons possess?
diffraction
emission
radiation
absorption
2
How many electron are in 1s
2
2s
2
2p
6
3s
1
?
8
12
10
11
3
What is the Electron Configuration for Carbon?
1s22s23s2
1s22s22p2
1s22s24s2
1s22s2
4
What is Vitamin-K
Potassium
Kryptonite
Calcium
Carotene
5
How many unpaired electrons are there in bromine- [Ar] 3d104s 2 4p5 in the ground state?
6
5
2
1
6
What is the total number of orbitals in the fourth main energy level?
9
4
1
16
7
In the equation c =λ v, c represents
speed of light
energy of a photon
frequency
wavelength
8
Which of the following is NOT a noble gas?
Ra
Ne
Xe
He
9
What angular quantum subshells or sublevels are within the 4th energy level?
spd
s
sp
spdf
10
The process of an atom releasing energy when it moves to a lower energy state is called
absorption
regression
translation
emission
11
According to the Aufbau principle, which of the following sublevels islowest in energy?
5p
3d
4s
4p
12
What is the maximum number of electrons that a single orbital can hold?
1
4
2
3
13
Angular quantum number L=1 represents which subshell/ sublevel?
p
s
d
f
14
In the Bohr model of the atom, in which orbit is an electron in its lowest energy state?
midway between two orbits
in the electron cloud
in the orbit farthest from the nucleus
in the orbit closest to the nucleus
15
How many electrons can fill d orbitals?
5
8
10
2
16
In the Bohr model of the atom, which particles exist in any one of a number of energy levels?
proton
electron
protons and neutrons
neutron
17
Separating unpaired electrons into as many orbitals as possible
minimizes the repulsion between electrons.
produces a greater spin quantum number.
results in more valence electrons.
. places the electrons farther from the nucleus.
18
In a ground-state hydrogen atom in which orbital is the electron?
2s
3p
1s
2p
19
Quantum numbers are sets of numbers that
relate the energies of protons in the atomic nucleus.
consist of multiples of two.
are characteristic only of the hydrogen atom.
specify properties of electrons.
20
Which mathematically describes the wave properties of electrons?
quantum theory
Rutherford model
Bohr model
atomic theory
21
What symbol is tungsten
Pb
Ti
W
Tn
22
What symbol is arsenic?
Sb
As
Ar
Ac
23
In 1s
2
2s
2
2p
6
, how many of neon’s p orbitals are completely filled?
1
6
3
2
24
How many different orientations are there for d orbitals?
1
7
5
3
25
Which color of light in the visible spectrum has the longest wavelength?
red
yellow
blue
orange
26
The statement that no two electrons in the same atom can have thesame four quantum numbers is
Hund's rule
the Pauli exclusion principle
Bohr’s law.
the Aufbau principle.
27
What is Hg
Tungsten
Potassium
Mercury
Hegartiam
28
The line-emission spectrum of an atom is caused by the energiesreleased when electrons....
none
“jump” from a lower energy level to a higher energy level.
“jump” from the ground state to an excited state.
“jump” from a higher energy level to a lower energy level.
29
Because excited hydrogen atoms always produced the same line emission spectrum, we concluded
Hydrogen has no electrons
Hydrogen releases energy of only certain values.
Hydrogen can exist only in the ground state.
Hydrogen does not release energy.
30
Put these elements in order of their atomic number He, C, N, H, F, B, Li
H,He,Li, C, N, F, B,
H,He, C, N, F, B, Li
H,He, Li, B, C, N, F
H,He, Li, B, C, F, N
31
How many electrons are present in an atom of 1s
2
2s
2
2p
6
3s
2
3p
6
4s
2
?
36
20
6
16
32
Which is not a quantum number?
spin quantum number
magnetic quantum number
angular momentum quantum number
orbital quantum number
33
A ground-state atom of which element has one electron in its fourth energy level?
K
B
Na
Ca+
34
In 1s
2
2s
2
2p
4
how many inner-shell electrons does oxygen have?
8
6
2
4
35
What is Pb
Plebonium
Tin
Mercury
Lead
36
What is the correct notation for a sublevel within the first energy level?
1s
1d
1f
1p
37
A quantum of energy is the
minimum quantity energy that can be lost or gained by atoms
frequency of electromagnetic energy given off by an atom.
wavelength of electromagnetic energy gained by an atom.
continuous spectrum of energy given off by an atom.
38
How many possible electrons can fill the 4th energy level?
10
8
18
32
39
A form of energy that exhibits wave behavior as it travels through space is
infrared
all of the above
microwave
visible light
40
Which of the following is a noble gas?
Radium
carbon
Argon
hydrogen
