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WorksheetsAtomic Structure quiz
Total questions: 21
Worksheet time: 14mins
Find the Term
Atoms of the same element that have a different number of neutrons in the nucleus.
electric charge
nucleus
mass number
isotope
What term refers to the elements having the same atomic number but different mass numbers?
isobar
Isoelectronic
isomer
isotope
What is the correct electron arrangement for sulfur? (Hint: think about the number of electrons per level and valence electrons)
2 - 8 - 6
2 - 8 - 8
4 - 8 - 2
2 - 8 - 4
An atom is neutral because of what? (Concept E)
neutrons balance the protons and electrons
nuclear forces stabilize the electrons
the number of protons (+) and electrons (-) are equal
the number of protons (+) and Neutrons (0) are equal
20 . Which statement about the arrangement of the periodic table is NOT true?
Noble gases are in the group farthest to the right
Metals are found on the left side of the periodic table
halogens are in the first column on the left
Transition metals are in the center of the periodic table
An unstable nucleus results from too many or too few _______ (Concept D)
protons
neutrons
electrons
radons
What is the atomic number of this element?
17
18
35
35.453
Which subatomic particle gives the identity of the atom?
electrons
neutrons
proton
none of the above
What is an atom’s nucleus made of? (Concept C)
protons and neutrons
protons only
neutrons only
protons and electrons
How many valence electrons are in the atom pictured?
4
2
8
0
Several scientists, including Ernest Rutherford, performed an experiment that helped improve the model of an atom by realizing the inner core of the atom housed most of the mass. The core has a special name, the ___.
electron
mass
nucleus
proton
True or false: Atoms have more electrons that neutrons
True
False
