CHEMICAL BONDING QUIZ X Part I

1.lewis structure of an atom shows ....
a.a number of electrons in the inner shells
b.electrons in the outermost shell
c.all electrons in an atom
d.all particles in an atom
e.all negative particles
2.How many dots are to be around Ne in its Lewis structure?
a.1
b.2
c.4
d.6
e.8
3.Which element attains the structure of a noble gas when it becomes a 2+ ion?
a.Li
b.Ba
c.Al
d.Cl
e.Ar
4.Which element attains the structure of a noble gas when it becomes a l+ ion?
a.K
b.Ca
c.Al
d.F
e.Ne
5.How many dots would the electron dot-diagram of Mg2+ have?
a.0
b.2
c.8
d.10
e.12
6.Which of the following atoms has the greatest tendency to attract electrons?
a.calcium
b.carbon
c.boron
d.beryllium
e.bromine
7.The distribution of charge is determined by the use of ….
a.electrons
b.protons
c.electronegativity
d.electropositivity
e.valence shells
8.What do the following have in common? 20Ne 19F- 24Mg2+
a.They are different elements so they have nothing in common
b.They are isotons of each other
c.They are isotopes of each other.
d.They are isoelectronic with each other.
e.They are isomers of each other.
9.When bromine gains one electron it ….
a.becomes a positive ion with a smaller radius
b.becomes a negative ion with a larger radius
c.becomes a positive ion with a larger radius
d.becomes a negative ion with a smaller radius
e.becomes a negative ion with the same radius
10.Which of the following substances does not belong to the major categories of compounds?
a.LiCl
b.Li
c.NO
d.CO
e.HCl
11.In ionic bonds, nonmetals are most likely to ….
a.gain electrons
b.lose electrons
c.share electrons
d.cancel electrons
e.transfer electrons
12.When a potassium atom reacts with bromine, the potassium will ….
a.lose only 1 electron
b.lose 2 electrons
c.gain only 1 electron
d.gain 2 electrons
e.share of pair electrons
13.The negative ion F- has the same electronic configuration as the positive ion ….
a.Ca2+
b.Li+
c.Mg2+
d.K+
e.Ba2+
14.Ionic bonds are formed when ….
a.valence electrons are shared between bonded atoms
b.valence electrons are transferred from one atom to another
c.all the electrons are shared between bonded atoms
d.all the electrons are transferred from one atom to another
15.When a reaction occurs between atoms with ground-state electron configura-tions of (2,1) and (2,7), the bond formed is mainly ….
a.ionic
b.metallic
c.polar covalent
d.nonpolar covalent
e.coordinate covalent
16.Which compound contains ionic bonds?
a.NO
b.CaO
c.HCl
d.CO
e.CCl4
17.Lithium and chloride react to form LiCl, an ionic compound. The chloride ion has ____ electrons in its outermost occupied shell.
a.2
b.6
c.7
d.8
e.18
18.When a sodium atom reacts with a chlorine atom to form a compound, the electron configurations of the ions forming the compound are the same as those in which noble gas atoms?
a.krypton and neon
b.neon and helium
c.krypton and argon
d.neon and argon
e.argon krypton