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WorksheetsQuantum Theory
Total questions: 35
Worksheet time: 18mins
Which is the two dimensional probability plot for 1s?
Which is the two dimensional probability plot for 2s?
Which is/are the two dimensional probability plot/s for 2p?
Which is the two dimensional probability plot for 3d?
Select the two dimensional probability plots of orbitals that have equal energy in a one-electron atom.
Select the two dimensional probability plots of orbitals that have equal energy in a multi-electron atom.
Which of the following has the longest wavelength
blues
greens
oranges
reds
There is usually a red warning sign outside X-ray clinics when the X-ray machine is turned on. X-rays are more dangerous than ultraviolet (UV) radiation because X-rays __________.
travels much faster than UV radiation
has a greater intensity than UV radiation
has a higher frequency than UV radiation
has a longer wavelength than UV radiation
What element/s is/are present in the unknown?
lithium
sodium
helium
hydrogen
Which of the following shows a set of elements with decreasing atomic size?
Se, O, Te, S
Te, Se, S, O
O, S, Se, Te
Te, O, S, Se
Which of the following shows a set of elements with increasing first ionization energy?
Kr, K, Se, Zn
K, Zn, Se, Ar
Ar, Se, Zn, K
Zn, K, Ar, Se
Identify the period 2 element with the following successive ionization energy.
boron
carbon
nitrogen
oxygen
fluorine
Identify the period 3 element with the following successive ionization energy.
sodium
magnesium
aluminum
silicon
phosphorus
A line emission spectrum is produced when and electron releases energy as it moves...
from a lower energy level to a higher energy level
from a higher energy level to a lower energy level
within the same energy level
Why are line emission spectrums useful?
they allow us to identify elements
they tell us how many protons there are in a nucleus
they help us predict the chemical behavior of an element
For a principal quantum number, "n", equal to 2, what is the total electron capacity of that level?
2
4
8
16
What is the “l” quantum number for an f orbital?
0
2
3
1
What element matches this electron configuration?
1s22s22p63s2
neon
magnesium
aluminum
potassium
Select the orbital diagram/s for a diamagnetic element.
Select the true statement or statements below.
Group VIII tends to have the most positive electron affinity compared to the other groups.
The electron affinity of Group I metals is closer to zero compared to that of Group II metals.
Among the different groups of non-metals, Group VII has the most negative electron affinity.
Select the true statement or statements below.
The electron shielding increases from lithium to francium in the alkali metal family.
The increase in the principal quantum number, n, is responsible for the periodic trend across a period.
The periodic trends down a group is explained by the increase of the effective nuclear charge, Zeffective.
Select the true statement or statements below.
Anions and cations that are isoelectronic are always equal in size.
Anions are always bigger than the atoms from which they are formed.
Cations are always smaller than the atoms from which they are formed.
Select the true statement or statements below.
Group I have positive 1st ionization energy because of the resulting octet configuration of electrons.
The 2nd electron affinity is always positive because energy is required to overcome electrostatic repulsion.
The 2nd ionization energy is always positive because energy is required to overcome electrostatic attraction.
Select the true statement or statements below.
Zeffective increase from right to left in a period.
The principal quantum number, n, increased down a group.
The shielding increases as the principal quantum number, n, increases.
