Trimester 1: Atomic Structure: Question Preview (ID: 30476)

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What is the mass number of an atom that has 4 protons, 6 neutrons, and 4 electrons?
a) 4
b) 6
c) 10
d) 14

What is the atomic number of an atom that has 6 protons, 6 neutrons, and 6 electrons?
a) 6
b) 12
c) 18
d) cannot be determined

What is the charge of an atom that has 7 protons, 7 neutrons, and 10 electrons?
a) positive (+)
b) negative (-)
c) neutral (0)
d) none of the above

Which of the following pairs are isotopes of the same element?
a) atom X (8 protons, 8 neutrons) and atom W (7 protons, 8 neutrons)
b) atom S (17 protons, 18 neutrons) and atom T (18 protons, 17 neutrons)
c) atom Q (56 protons, 81 neutrons) and atom R (57 protons, 81 neutrons)
d) atom J (27 protons, 32 neutrons) and atom L (27 protons, 33 neutrons)

Ions have
a) equal numbers of protons and electrons
b) equation number of protons and neutrons
c) unequal numbers of protons and electrons
d) unequal numbers of protons and neutrons

isotopes have
a) same protons, different electrons
b) same protons, different neutrons
c) same protons, same electrons
d) same protons, same electrons

Which of the following describes protons?
a) positively charged
b) located in nucleus
c) comprises atomic number
d) all of the above

How many valence electrons does an atom of nitrogen (N) have?
a) 2
b) 5
c) 7
d) 14

An ion that consists of 7 protons, 6 neutrons, and 10 electrons is a(n)
a) anion with a net charge of 3-
b) cation with a net charge of 3+
c) cation with a net charge of 4-
d) anion with a net charge of 4+

How many pairs of electrons are shared in a molecule of H2?
a) 0
b) 1
c) 2
d) cannot be determined

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