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WorksheetsS21: Unit 5 Review
Total questions: 80
Worksheet time: 2hrs 25mins
1s22s22p63s23p64s23d10
1s22s22p63s2
What is incorrect about this orbital diagram?
Both arrows in the 2p box should be pointing up
There is nothing incorrect with this diagram
In the 2p box there should only be 1 electron in the first 2p box and one in the 2nd 2p box
All the arrows should be pointing up.
What is incorrect about this orbital diagram?
Both arrows in the 2p box should be pointing up
There is nothing incorrect with this diagram
In the 2p box there should only be 1 electron in the first 2p box and one in the 2nd 2p box
All the arrows should be pointing up.
This rule describes the order in which electrons are filled in all the orbitals belonging to a subshell.
Aufbau Principle
Hund’s Rule
Pauli Exclusion Principle
Electron Configuration Rule
Pauli Exclusion Principle
This rule describes the order in which electrons are filled in all the orbitals belonging to a subshell.
This principle can also be stated as “no two electrons in the same atom have the same values for all four quantum numbers”.
The Pauli exclusion principle states that a maximum of two electrons, each having opposite spins, can fit in an orbital.
The Pauli exclusion principle states that a maximum of two electrons, each having opposite spins, can fit in an orbital.
Hund’s Rule
This rule describes the order in which electrons are filled in all the orbitals belonging to a subshell.
According to this principle, electrons are filled in the following order: 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p…
It states that every orbital in a given subshell is singly occupied by electrons before a second electron is filled in an orbital.
In order to maximize the total spin, the electrons in the orbitals that only contain one electron all have the same spin (or the same values of the spin quantum number).
Aufbau Principle
According to this principle, electrons are filled in the following order: 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p…
The energy of an orbital is calculated by the sum of the principal and the azimuthal quantum numbers.
This principle is named after the German word ‘Aufbeen’ which means ‘build up’.
The Aufbau principle dictates that electrons will occupy the orbitals having lower energies before occupying higher energy orbitals.
What does Pauli exclusion principle state ?
states that each electron occupies the lowest energy orbital available
states that -no two electrons in the same orbital can have the same spin
states that single electrons electrons with the same spin must occupy each-energy orbital before additional electrons with opposite spins can occupy the same orbitals
Why do atoms bond?
They typically don't bond
To add or take away energy levels
To have a full valence shell.
To have a full inner shell
Which category of elements usually form negative ions?
metals
nonmetals
metalloids
noble gases
Predict the bond between Mg and Cl
covalent
ionic
metallic
none of the above
What charge would a potassium (K) ion have?
+1
-1
+2
-2
13. What elements generally make a covalent bond?
metal and nonmetal
2 or more nonmetals
metal
none of the above
What is a valence electron?
an electron that is found in the outermost shell of an atom.
an electron found in the innermost shell of an atom.
an electron found in the middle shell.
What usually forms the positive ion?
Metal
Nonmetals
None
If I was trying to determine if two atoms will bond, what would be helpful to know:
Valence electrons, found by group number
Whether the elements are metals or nonmetals
The electronegativity of the atoms
All of the above, all of which can be found on the Periodic Table
Which sub-atomic particle is involved in chemical bonding?
Proton
Neutron
Electron
Valence Electron
A line spectrum is produced when an electron moves from one energy level
into the nucleus
to a higher energy level
to another position in the same sublevel
to a lower energy level
Emission spectra emitted by an element (or compound) will produce ___ through a spectroscope.
bright lines
a continuous rainbow
dark lines
white light
Which type of spectrum is this?
Emission Spectrum
Absorption Spectrum
Continuous Spectrum
The lowest energy configurations for electrons in an atom is called the
neutral state
home state
ground state
base state
A line spectrum is produced when an electron moves from one energy level
into the nucleus
to a higher energy level
to another position in the same sublevel
to a lower energy level
Emission spectra emitted by an element (or compound) will produce ___ through a spectroscope.
bright lines
a continuous rainbow
dark lines
white light
Which type of spectrum is this?
Emission Spectrum
Absorption Spectrum
Continuous Spectrum
The lowest energy configurations for electrons in an atom is called the
neutral state
home state
ground state
base state
When a photon is absorbed by an electron and the electron changes energy level, the electron is described as being (a)
In (a) spectroscopy the final spectrum is mostly black with some sharp lines of colour
