Chemistry Final 3 Of 3 Question Preview (ID: 34380)
Chem Final.
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Most elements are
a) metals
b) nonmetals
c) metalloids
d) semiconductors
How do you know that potassium, an alkali metal, is highly reactive?
a) it conducts heat
b) it conducts electricity
c) it is a soft and shiny metal
d) it has one valence electron
elements that share properties of both metals and nonmetals are called?
a) Ions
b) Periods
c) Semiconductors/metalloids
d) Valences
Which statement about alkali metals is correct?
a) They are located in the left most column of the periodic table
b) they are extremely nonreactive
c) are usually gases
d) form negative ions with 1- charge
Neon is used for filling neon signs. Like other noble elements it has a full octet of electrons which makes the gas
a) freeze at room temperature
b) react with other gases in the air
c) unlikely to combine with other elements
d) solidify at standard pressure and temperature
Which is not a family of the periodic table?
a) anions
b) alkaline-earth metals
c) halogens
d) noble gases
Which of the rules discussed relates to the spin of the electron in an orbital?
a) Pauli Exclusion
b) Aufbau Principle
c) Hund's Rule
d)
Reactive elements of group 17 that are poor conductors
a) Alkaline earth metals
b) transition metals
c) halogens
d) noble gases
Highly reactive elements that belong to Group 1
a) metalloids
b) alkali metals
c) halogens
d) noble gases
Elements that belong to groups 3-12 and are somewhat reactive
a) alkaline earth metals
b) alkali metals
c) transition metals
d) metalloids
Group 2 elements that have two valence electrons
a) alkaline earth metals
b) noble gases
c) transition metals
d) halogens
What is the Hund's rule?
a) electrons fill a single orbital before moving to an empty orbital
b) electrons will enter empty orbitals of the same energy level before pairing up in an orbital with an electron already preset
c) two electrons in the same orbital must have separate spins
d) the energy level of an electron is dependent on the shell
According to the Aufbau Principle
a) an orbital may be occupied by only 2 electrons
b) electrons enter orbitals of highest energy first
c) electrons enter orbitals of lowest energy first
d) electrons in the same orbital must have opposite spins
Would you normally expect neon to form compounds?
a) yes, but neon is a rare gas and difficult to obtain
b) no, neon needs six electrons to fill its outermost level
c) yes, neon needs six valence electrons to fill its outermost energy level
d) no, neon has eight electrons in its outermost level and is stable
Which pair of elements would most likely have a similar arrangement of outer electrons and have similar chemical behaviors?
a) Boron and aluminum
b) Helium and fluorine
c) Carbon and nitrogen
d) Chlorine and oxygen
Which is a property of the noble gases in group 18?
a) Malleability
b) Brittleness
c) High electrical conductivity
d) unlikely to react with other elements
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