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WorksheetsChemical Bonding (4.1 Lewis Structure & 4.2 Molecular Shape)
Total questions: 10
Worksheet time: 9mins
What is the Lewis symbol of a carbon?
All are correct
A chemical bond formed by sharing of electrons is
an ionic bond
a hydrogen bond
a covalent bond
a metallic bond
Which of the following pairs do not form a coordinate bond to each other?
H2O and H+
NH3 and H+
NH3 and BF3
AlCl3 and H+
The Lewis structure of a molecule is shown above. Which group in the Periodic Table does M belongs to?
Group 14
Group 15
Group 16
Group 18
Elements A and E have two and seven valence electrons respectively. The most likely formula of the compound formed between A and E is
A2E
AE2
A2E2
A2E7
The Lewis structure of the nitrate ion, NO3- is shown above. Nitrogen atom has the exception to the octet rule of
Incomplete octet
Expanded octet
Odd number electron
None of above
Molecule X have five bonding pairs only around the central atom. The shape of molecule X is best described as
trigonal planar
tetrahedral
trigonal bipyramidal
octahedral
Choose a false statement.
Bond length is the distance between a central atom and terminal atom
Bond angle is the angle of two covalent bonds
Lone pair is a pair of electrons that are not involved in bonding
The repulsion of lone pair-lone pair is stronger than lone pair-bonding pair
The bond angle in methane, CH4 is
(a)
Choose a correct statement of nitrate ion, NO3-.
The central atom is surrounded by 4 bonding pairs
The angle between two covalent bonds is 120°
The length of single bonded N-O is shorter than double bonded N-O
All atoms obey octet rule, except the double bonded oxygen
