Entry Task: Oct 22nd Monday Grab a Clicker Calculator Scratch paper Equation sheet

Agenda Review Ch. 6-9

Clicker Questions Chapter 6

What is the frequency of a wave which has a wavelength of 0.156 nm 5.2 x 10-10 1.92 x 109 0.468 x 108 1.92 x 10-9 of 30 Answer: b

Which color of visible light has the least amount of energy per photon? Violet Blue Yellow Red of 30 Answer: D

Increases Decreases stays the same varies As the principal energy level increases in an atom's orbitals, the average distance of an electron energy level from the nucleus ______________. Increases Decreases stays the same varies of 30 Answer: a

The probability map for an electron is called An orbit Electron configuration orbital Electron map of 30 Answer: c

A given set of f orbitals consists of ______________ orbital(s). 3 5 7 9 of 30 Answer: c

The maximum number of electrons allowed in each of the d orbitals is 2 4 8 18 of 30 Answer: a

The maximum number of electrons allowed in the p sublevel of the third principal level is 2 6 8 18 of 30 Answer: b

Phosphorus has how many electrons in its outermost principal energy level? 2 3 5 15 of 30 Answer:c

The electron configuration for the sulfur atom is 1s22s22p63s23p2 1s22s22p63s23p4 1s22s22p63s5 1s22s22p63s23p5 of 30 Answer:b

How many electrons are in the third principal energy level (n = 3) of one atom of Fe? 2 8 14 18 of 30 Answer:c

Clicker Questions Chapter 7

The first Periodic Table was created by Amadeo Avogadro. Dmitri Mendeleev. Henry Moseley. Ernest Rutherford. of 30 Answer: b

The effective nuclear charge felt by an atom’s valence electrons (X) going from left to right and (Y) going down a column on the Periodic Table. X = increases Y = increases X = increases Y = decreases X = decreases Y = increases X = decreases Y = decreases of 30 Answer: a

The correct order of increasing atomic radius (smallest  largest) is Na < Mg < K < Rb. Mg < Na < K < Rb. Rb < K < Na < Mg. Rb < K < Mg < Na. of 30 Answer: b

The statements below refer to ionic radii. Which statement is FALSE? Br1– is larger than Cl1–. Se2– is larger than Br1–. K1+ is larger than Ca2+. Na1+ is larger than K1+. of 30 Answer: d

Two ions are isoelectronic if they have the same charge. number of protons. number of electrons. number of neutrons. of 30 Answer: c

The minimum energy needed to remove an electron from an atom in its ground state is called the atom’s potential energy. activation energy. electron affinity. ionization energy. of 30 Answer: d

The energy change that occurs when an electron is added to an atom is called the atom’s potential energy. activation energy. electron affinity. ionization energy. of 30 Answer: c

The correct order of increasing first ionization energy (smallest  largest) is Na < Ca < Al < Sn. Na < Al < Ca < Sn. Na < Al < Sn < Ca. Ca < Na < Sn < Al. of 30 Answer: b

The correct order of increasing electron affinity (most negative  least negative) is O < Cl < B < C. O < Cl < C < B. Cl < O < C < B. Cl < O < B < C. of 30 Answer: c

Most metal oxides form _______ solutions when dissolved in water. acidic basic neutral amphoteric of 30 Answer: b

Most nonmetal oxides form _______ solutions when dissolved in water. acidic basic neutral amphoteric of 30 Answer: a

noble gas. halogen. group IIA metal. transition metal. A soft gray solid reacts with water to form a flammable gas and a basic solution. The solid is most likely to be a noble gas. halogen. group IIA metal. transition metal. of 30 Answer: c

Ozone is an allotrope of which element? hydrogen oxygen sulfur chlorine of 30 Answer: b

Unknown solid X turns a Bunsen burner flame green and produces a purple color on reaction with NaOCl. X is BaI2. BaBr2. SrI2. d. SrBr2. of 30 Answer: a

The noble gases are monatomic. have filled s and p subshells. are generally unreactive. d. All of the above. of 30 Answer: d

Clicker Questions Chapter 8

The two types of chemical bonds commonly found in compounds are doric and covalent. ionic and electrolytic. ionic and covalent. electrolytic and compound. of 30 Answer: c

The Lewis symbol for a sulfur atom includes how many dots? 5 6 7 8 of 30 Answer: b

The octet rule states that atoms tend to gain, lose, or share electrons until they have _______ valence electrons. 5 6 7 8 of 30 Answer: d

Which compound below has the largest lattice energy? NaCl KBr CaO CsI of 30 Answer: c

When a transition metal atom forms a +1 ion, it loses an electron from what type of orbital? d f of 30 Answer: a

Which choice below correctly lists the elements in order of increasing electronegativity (least  most) ? C < N < O < F N < C < O < F N < C < F < O C < N < F < O of 30 Answer: a

Which choice below correctly lists the elements in order of increasing electronegativity (least  most) ? F < Cl < Br < I F < Cl < I < Br I < Cl < Br < F I < Br < Cl < F of 30 Answer: d

The carbon disulfide (CS2) molecule has two single bonds. two double bonds. a single bond and a double bond. a single bond and a triple bond. of 30 Answer: b

The hydrogen cyanide (HCN) molecule has two single bonds. two double bonds. a single bond and a double bond. a single bond and a triple bond. of 30 Answer: d

The formal charge on the nitrogen atom in the nitrate ion (NO31–) is +2 +1 –1 of 30 Answer: b

The formate ion (HCO21–) is stabilized by resonance, which suggests that the oxygen atoms’ formal charges are: –1 and –1 0 and 0 –1 and 0 –1/2 and –1/2 of 30 Answer: d

Which molecule below violates the octet rule? PF5 CH4 NBr3 OF2 of 30 Answer: a

Which molecule below has an unpaired electron? NO NH3 BF3 PF5 of 30 Answer: a

greater than less than equal to variable, depending on X and Y For atoms X and Y, the bond enthalpy of an X-Y bond is _______ the bond enthalpy of an X=Y bond. greater than less than equal to variable, depending on X and Y of 30 Answer: b

greater than less than equal to variable, depending on X and Y For atoms X and Y, the bond length of an X-Y bond is _______ the bond length of an X=Y bond. greater than less than equal to variable, depending on X and Y of 30 Answer: a

Clicker Questions Chapter 9

The overall shape of a molecule is determined by its atoms. bond angles. Symmetry. electron affinity. of 30 Answer: b

square planar. octahedral. square pyramidal. tetrahedral. If a central atom is surrounded by six electron domains, the term used to describe its fundamental geometry is square planar. octahedral. square pyramidal. tetrahedral. of 30 Answer: b

The geometry of the methane (CH4) molecule is linear. trigonal bipyramidal. trigonal planar. tetrahedral. of 30 Answer: d

The geometry of the phosphorus trichloride (PCl3) molecule is tetrahedral. trigonal planar. pyramidal. trigonal bipyramidal. of 30 Answer: c

The geometry of the bromine trifluoride (BrF3) molecule is see-saw shaped. trigonal planar. pyramidal. T-shaped. of 30 Answer: d

The geometry of the xenon tetrafluoride (XeF4) molecule is square planar. tetrahedral. see-saw shaped. trigonal bipyramidal. of 30 Answer: a

Formic acid (HCO2H) has an O-C-O bond angle of (X) degrees and a C-O-H bond angle of (Y) degrees. X = 180, Y = 120 X = 120, Y = 109.5 X = 180, Y = 109.5 X = 109.5, Y = 109.5 of 30 Answer: b

Which molecule is polar? BBr3 SF6 NH3 of 30 Answer: d

Which molecule is nonpolar? CO2 SO2 IF3 IF5 of 30 Answer: a

The hybridization of the oxygen atom in a water molecule is sp. sp2. sp3. sp3d. of 30 Answer: c

The central atom of which molecule below is sp3 d-hybridized? SO3 SeBr4 XeOF4 of 30 Answer: c

A molecule of acetonitrile (CH3CN) contains _______ sigma bonds. 2 3 4 5 of 30 Answer: d

A molecule of crotonaldehyde (CH3CH=CH-CH=O) contains _______ pi bonds. 1 2 3 4 of 30 Answer: b

How did we do?