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15 questions
The Lewis Dot structure for aluminum would have ______ electrons.
13
3
8
27
Valence electrons are those that are
closest to the nucleus.
freely floating between atoms.
in the outermost energy level of the atom.
unable to become involved in chemical bonding.
Which of the following is not a way that ions can form?
gaining electrons
gaining protons
losing electrons
All of the above are ways that ions can form.
Oxygen has six valence electrons. When forming an ion, oxygen will
lose six electrons and have a charge of +6.
lose six electrons and have a charge of -6.
gain two electrons and have a charge is +2.
gain two electrons and have a charge of -2.
Which of the following best describes the correct arrangement of the electrons in a Lewis dot structure for phosphorus?
five single electrons
two pairs of electrons and one single electron
three pairs of electrons and one single electron
three single electrons and one pair of electrons
Atoms and ions that are isoelectronic have
the same charge.
the same number of electrons.
the same number of protons.
no charge since the number of protons and electrons is equal.
Look at the periodic table. What should be the charge on the ion formed by calcium?
+1
+2
-1
-2
Atoms that have gained electrons form
cations.
anions.
negions.
positrons.
Most elements are most stable when their outermost energy levels contain ________ electrons.
2
6
8
18
Look at the Periodic table. Which of the following elements would you expect to form an ion that has the same charge as the oxide ion?
calcium
boron
sulfur
chlorine
Which of the following pairs of atoms and/or ions is isoelectronic?
Na and K
Cl and Cl-1
Ne and Na+1
O-2 and S-2
Which of the following elements is an exception to the octet rule?
helium
oxygen
chlorine
magnesium
Which of the following tend to gain electrons when forming ions?
metalloids
metals
nonmetals
cations
Anions have
gained electrons.
lost electrons.
gained protons.
lost protons.
Which of the following groups on the Periodic Table will only form ions with positive charges?
Group 2
Group 15
Group 17
Group 18
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