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WorksheetsChemistry Semester 1 Part 1
Total questions: 16
Worksheet time: 32mins
All atoms are ____.
positively charged, with the number of protons exceeding the number of electrons
negatively charged, with the number of electrons exceeding the number of protons
neutral, with the number of protons equaling the number of electrons
neutral, with the number of protons equaling the number of neutrons
The nucleus of an atom is ____.
composed of protons and neutrons
has more protons than neutrons
contains protons and electrons
consists of electron and neutrons
Isotopes of the same element have different ____.
positions on the periodic table
chemical behavior
atomic numbers
mass numbers
The principal quantum number indicates what property of an electron?
position
speed
energy level
electron cloud shape
What is the maximum number of d orbitals in a principal energy level?
1
2
3
5
What is the maximum number of orbitals in the p sublevel?
2
3
4
5
If the spin of one electron in an orbital is clockwise, what is the spin of the other electron in that orbital?
zero
clockwise
counterclockwise
both clockwise and counterclockwise
What types of atomic orbitals are in the third principal energy level?
s and p only
p and d only
s, p, and d only
s, p, d, and f
What is the next atomic orbital in the series 1s, 2s, 2p, 3s, 3p?
2d
3d
3f
4s
If three electrons are available to fill three empty 2p atomic orbitals, how will the electrons be distributed in the three orbitals?
one electron in each orbital
two electrons in one orbital, one in another, none in the third
three in one orbital, none in the other two
Three electrons cannot fill three empty 2p atomic orbitals.
What is the number of electrons in the outermost energy level of an oxygen atom?
2
4
6
8
What is the electron configuration of potassium?
1s 2s 2p 3s 3p 4s^1
1s 2s 2p 3s 3p^3
1s 2s 2p 3s 3p^3
1s 2s 2p 3s 3p 4s^1
What is the electron configuration of Fe?
1s2 2s2 2p6 3s2 3p6 4s2 3d6
1s2 2s2 2p6 3s2 3p6 3d8
1s2 2s2 2p6 3s2 3p6 4s2 3d8
1s2 2s2 2p6 3s2 3p4 4s2 3d6
An element has an atomic number of 76. The number of protons and electrons in a neutral atom of the element are ____.
152 protons and 76 electrons
76 protons and 0 electrons
38 protons and 38 electrons
76 protons and 76 electrons
In which of the following sets is the symbol of the element, the number of protons, and the number of electrons given correctly?
In, 49 protons, 49 electrons
Zn, 30 protons, 60 electrons
Cs, 55 protons, 132.9 electrons
F, 19 protons, 19 electrons
How many protons, electrons, and neutrons does an atom with atomic number 50 and mass number 125 contain?
50 protons, 50 electrons, 75 neutrons
75 electrons, 50 protons, 50 neutrons
120 neutrons, 50 protons, 75 electrons
70 neutrons, 75 protons, 50 electrons
