Chemistry- Chemical Bonding: Question Preview (ID: 3915)


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What is the definition of isotopes?
a) Atoms of the same element with different number of protons and different number of neutrons. b) Atoms of different elements with same number of protons and different number of neutrons. c) Atoms of the same element with same number of protons and different number of neutrons. d) Atoms of different elements with same number of protons and same number of neutrons.
What is the total number of electrons an atom with principal quantum shell 9 can occupy?
a) 164 b) 163 c) 161 d) 162
HWhat 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) The lower the principal quantum number, the higher the ionisation energy c) The higher the principal quantum number, lower the ionisation energy d) No relationship
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) AUFBAU Principal c) Pauli Exclusion Principle d) Theory of relativity
What does the number of valence electrons determine?
a) Physical properties b) Chemical reactivity and properties c) Chemical and physical properties d) No significance
What is the order of bond strength from strongest to weakest?
a) Intermolecular Forces, Metallic Bond, Covalent Bond, Ionic Bond b) Metallic Bond, Covalent Bond, Ionic Bond, Intermolecular Forces c) Ionic Bond, Metallic Bond, Covalent Bond, Intermolecular Forces d) Covalent Bond, Intermolecular Forces, Metallic Bond, Ionic Bond
Why are metals a good electrical and heat conductor respectively?
a) Presence of mobile electrons, Closely packed atoms b) Closely packed atoms, absence of mobile electrons c) Electrons sparsely dissipated, Lattice structure of bond d) Strong electrostatic attraction, Induced dipole-dipole attraction
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 an element. Diamond c) One of two or more existing forms of a molecule. Diamond d) One of two or more existing forms of an element. Graphite
How many bond pairs and lone pairs does a molecule with a trigonal-bipyramidal shape have?
a) 5 bond pairs, 1 lone pair b) 5 bond pairs, 2 lone pairs c) 4 bond pairs, 1 lone pair d) 4 bond pairs, 2 lone pairs
Which is the only atom that hydrogen cannot bond with via hydrogen bonding?
a) Nitrogen b) Chlorine c) Oxygen d) Fluorine
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