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Chemistry- Chemical Bonding
Test Description: Quiz on Atomic Structure and Chemical Bonding
Instructions: Answer all questions to get your test result.
1) What is the definition of isotopes?
A
Atoms of different elements with same number of protons and same number of neutrons.
B
Atoms of the same element with different number of protons and different number of neutrons.
C
Atoms of different elements with same number of protons and different number of neutrons.
D
Atoms of the same element with same number of protons and different number of neutrons.
2) What is the total number of electrons an atom with principal quantum shell 9 can occupy?
A
164
B
163
C
162
D
161
3) What is the relationship between the principal quantum number and ionisation energy?
A
The ionisation energy is equals to ten times the principal quantum number
B
No relationship
C
The lower the principal quantum number, the higher the ionisation energy
D
The higher the principal quantum number, lower the ionisation energy
4) When electrons are added successively to a set of orbitals of the same energy, they occupy them singly first before any pairing occurs. What is this rule/principal named?
A
Hund's rule
B
Pauli Exclusion Principle
C
AUFBAU Principal
D
Theory of relativity
5) What does the number of valence electrons determine?
A
Chemical and physical properties
B
No significance
C
Chemical reactivity and properties
D
Physical properties
6) What is the order of bond strength from strongest to weakest?
A
Metallic Bond, Covalent Bond, Ionic Bond, Intermolecular Forces
B
Ionic Bond, Metallic Bond, Covalent Bond, Intermolecular Forces
C
Intermolecular Forces, Metallic Bond, Covalent Bond, Ionic Bond
D
Covalent Bond, Intermolecular Forces, Metallic Bond, Ionic Bond
7) Why are metals a good electrical and heat conductor respectively?
A
Closely packed atoms, absence of mobile electrons
B
Electrons sparsely dissipated, Lattice structure of bond
C
Presence of mobile electrons, Closely packed atoms
D
Strong electrostatic attraction, Induced dipole-dipole attraction
8) What is an allotrope? What is an example of an allotrope of carbon?
A
One of two or more existing forms of a molecule. Graphite
B
One of two or more existing forms of a molecule. Diamond
C
One of two or more existing forms of an element. Graphite
D
One of two or more existing forms of an element. Diamond
9) How many bond pairs and lone pairs does a molecule with a trigonal-bipyramidal shape have?
A
4 bond pairs, 2 lone pairs
B
5 bond pairs, 1 lone pair
C
4 bond pairs, 1 lone pair
D
5 bond pairs, 2 lone pairs
10) Which is the only atom that hydrogen cannot bond with via hydrogen bonding?
A
Nitrogen
B
Chlorine
C
Oxygen
D
Fluorine
*select an answer for all questions
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