Atomic Structure: Question Preview (ID: 30264)

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The number of electons in a stable atom are
a) Always equal to the number of neutrons b) Always equal to the number of protons c) Twice as many as the number of protons d) Twice as many as the number of neutrons
If you add a neutron to an atom, you will
a) Increase the atomic number b) Increase the atomic mass c) Increase the charge of the atom d) Become the next element on the periodic table
Electrons are in regions surrounding the nucleus called energy levels. The first energy level is
a) Is farthest from the nucleus b) Is closest to the nucleus c) holds the most electrons d) needs more than two electrons to fill it up
In order to change the type of atom you are, you must
a) Add neutrons to the nucleus b) Add electrons to the nucleus c) Add protons to the nucleus d) Add electrons to the orbital shell
An electron has a
a) Postive charge b) Negative charge c) Neutral charge d) A positive and a negative charge
A neutron has a
a) neutral charge(no charge) b) Positive Charge c) Negative Charge d) A positive OR a negative charge depending on atom
The proton has a
a) Positive charge b) Negative charge c) No charge (neutral) d) Depends on the atom
The atomic mass of an atom tells you
a) The mass of protons in the atom b) the number of protons or electrons c) The number of protons plus the number of neutrons in the nucleus d) The number of atoms in a gram
Oxygen is atom number 8 on the periodic table because
a) It was the eighth atom discovered b) It weighs 8 grams c) It is the only atom that has 8 electrons d) It is the only atom with 8 protons in the nucleus
If an atom has an atomic mass of 7 and an atomic number of 3, then it has how many neutrons?
a) 4 b) 3 c) 7 d) 10
The particles located in the nucleus of an atom include
a) Protons and Neutrons b) Protons and Electrons c) Neutrons and Electrons d) Electrons only
An atom's atomic number tells you
a) The number of protons in the atom b) The order in which the atom's were discovered c) The size of the atom d) The number of protons plus the number of neutrons
Argon has 18 electrons and 18 protons. The electrons fill the energy levels like this:
a) 2 in the first shell, 10 in the second shell, 6 in the third shell b) 2 in the first shell, 4 in the second shell, 10 in the third shell c) 2 in the first shell, 8 in the second shell, 18 in the third shell d) 2 in the first shell, 8 in the second shell, 8 in the third shell
The atoms in a column on the periodic table all have
a) The same symbol b) The same number of electrons c) The same number of energy levels d) The same number of electrons in the last shell
The rows on the periodic table are called
a) periods b) groups c) families d) tables
The halogen group on the periodic table hold how many valence electrons
a) 8 b) 1 c) 7 d) 2
The atoms in the noble gas group are stable because
a) They are on the right side of the periodic table and are therefore the biggest atoms b) The outer shells (energy levels) are full c) They have 8 total electrons d) The nucleus has an equal number of protons and neutrons
An example of a noble gas would be
a) Helium b) Hydrogen c) Chlorine d) Sodium
Potassium (K) is located in which group on the periodic table?
a) Alkali metal b) Halogen c) Noble gas d) Alkaline Earth Metals
This atom has 2 valence electrons in it's sixth energy level
a) Silicon b) Radium c) Helium d) Francium
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