chemistry chapter 7&8 multiple choice

th group state electron configuration for Zn is :

(Ar) 4s2 3d10

a photon has an energy of (5.53e-17) what is its frequency in Hz? 8.35e16 1.20e-17 3.66e-50

8.35e16

which has the least tendency to gain electrons? N P Sb As Bi

Bi

consider the set of isoelectric (have the same electron configuration) atoms and ions : A2- , B-, C, D+, E2+. which arrangement of the relative radii is correct? A>B>C>D>E E>D>C>B>A can not be predicted

A>B>C>D>E

sulfur is smaller than phosphorus because :

the nuclear charge of sulfur is larger

which one of the following has the smallest radius? An Mg F Al O

Al

Which of the following ions have noble gas electron configurations 1. Se 2. V 3. Sc 4.Cu

1 and 3 only

which one of the following photons has h largest energy? 600 nm 2.4e-6 1.2e3 1.5e-9

1.5e-9

if the quantum number restrictions for the angular momentum quantum number(l) were changed from l=0,1,2 to l=0,1,2...n, how many element would there be in the 2nd period of the periodic table?

18

of the following electron configurations of neutral atoms, which represents an atom in an excited state? 1s2 2s2 2p6 3s2 3p6 1s2 2s2 2p6 3s2 1s2 2s2 2p6 3s2 3p2 1s2 2s2 2p6 3s1

1s2 2s2 2p6 3s2

in the following electron configuration, how many orbitals have unpaired electrons? 1s2 2s2 2p6 3s2 3p4

2

the number of unpaired electrons in a nitrogen atom is

2

how many electrons can be accommodated in all the atomic orbitals that correspond to the principal quantum number 4?

32

in a single atom, what is th maximum number of electrons that can have quantum number n=4?

32

there are _____ unpaired electrons in a groun state manganese (Mn) atom

5

the sub level with the highest energy is : 4d 4p 5p 5s

5p

what is the total number of electrons in the third energy level in an atom with the following electron configuration? 1s2 2s2 2p6 3s2 3p4

6

an infrared wave has a wavelength of 6.5x10^-4 cm. what is this distance in angstroms? 4.6e3 6.5e6 6.5e-4 6.5e4

6.5e4

there are ____ possible values for the magnetic quantum number ml of an electron in an 6f subshell

7

which element has a lower first ionization energy than magnesium? S Ne Cl Si Al

Al

which of the following period 3 elements has the largest first ionization energy? P An Cl Al

Cl

which of the following group 1 elements has the smallest first ionization energy? Li Cs Rb K

Cs

select the element with the least metallic character : C F Ge Si Pb

F

which of the following best helps to account for the fact that he F- ion is smaller than the O2- ion? F- is more polarizable than O2- is F- has a larger nuclear mass than O2- has F- has more electrons than O2- has F- has a larger nuclear charge than 2- has

F- has a larger nuclear charge than 2- has

which of the following has the lowest electron affinity? N Li F C

Li

which one of the following variations in atomic radii is correct? Li>Be>B Br>Cl>Se Cl>S>P F>Ne>Na

Li>Be>B

in which case do all three elements have similar properties because of the number of electrons in the highest energy orbitals? Mg, Ca, Sr Na, K, Al C, Cu, Ag Fe, Sn, O

Mg, Ca, Sr

Select the element with the most metallic character : Na S Si Mg

Na

which of the following ions is least likely to b formed? Al3+ Na2+ Be2+ S2-

Na2+

which of the following groups of isoelectronic ions is arranged correctly in order of increasing size? F<Na<O Na<F<O Na<O<F F<O<Na

Na<F<O

which atom has the highest electronegativity? Br O C Mg

O

which of the following equations correctly represents the process involved in the electron affinity of X? X+ (g) + e- —— X (g) X (g) —— X+ (g) + e- X (g) + e- —— X-(g)

X (g) + e- —— X-(g)

in the ground state, this element has atoms that have only 1 electron in a p orbital : carbon nitrogen fluorine aluminum hydrogen

aluminum

in order to make a lamp brighter, you would increase the light wave's :

amplitude

which of the following elements has the most metallic character? cesium potassium calcium lithium

cesium

an electron for which n=4 has more _____ than an electron for which n=2

energy

which are most likely to form anions? noble gases transition elements alkali metals halogens actinides

halogens

unlike the bohr model of the atom, current atomic theory describes an electron :

in terms of probable location

elements with the lowest first ionization energies are found in the ________ region of the periodic table

lower left

which one of the following sets of quantum numbers can correctly represent a 3p orbital? n=3, l=0, ml= 1 n=3, l=1, ml=-1 n=3, l=1, ml=2

n=3, l=1, ml=2

which of the following electron transitions in a hydrogen atom results in the emission of the highest energy photon? n=1 to n=5 n=6 to n=2 n=5 to n=1 n=2 to n=5

n=5 to n=1

which are the most difficult to oxidize in a given period of the periodic table? noble gases transition elements alkali metals halogens actinides

noble gases

correctly complete the following statement : the +2 oxidation state of titanium (Ti) and the zero oxidation state of calcium (ca) are :

not isoelectric

compared to the atomic radius of calcium, the atomic radius of gallium is smaller because increased :

nuclear charge causes electrons to be held more tightly

the diagram (one up arrow, one down arrow) shows two electrons with :

opposite spins

the effective nuclear charge for an atom is less than th actual nuclear charge due to :

shielding

atomic orbitals developed using quantum mechanics to describe regions of :

space in which one is most likely to find an electron