(a)
Interpretation:
The chemical formula of silicon disulfide needs to be determined.
Concept introduction:
Naming format for covalent binary compounds:
Prefix are used as mono, di, tri, tetra, penta, hexa and so on for the number of each element present in a molecule. Generally, mono prefix is not used while writing the name of covalent compounds as by convection if no prefix is used, then it means there is only 1 atom of that respective element.
Answer to Problem 56QAP
Formula of silicon disulfideis SiS2.
Explanation of Solution
Chemical name of molecule = silicon disulfide
In this chemical compound:
Least electronegative atom = Silicon and its symbol is Si.
Most electronegative atom = Sulphur and its symbol isS.
Prefix used for least electronegative atom = “none” that means only 1 silicon atom.
Prefix used for most electronegative atom = “di” that means 2sulphur atoms.
Thus, molecular formula for silicon disulfide= SiS2
(b)
Interpretation:
The chemical formula of phosphine needs to be determined.
Concept introduction:
Phosphine is a general name forphosphorustrihydride.
Naming format for covalent binary compounds:
Prefix are used as mono, di, tri, tetra, penta, hexa and so on for the number of each element present in a molecule. Generally, mono prefix is not used while writing the name of covalent compounds as by convection if no prefix is used, then it means there is only 1 atom of that respective element.
Answer to Problem 56QAP
Formula of phosphine is PH3.
Explanation of Solution
Phosphine is a general name Phosphorus trihydride.
In given chemical compound:
Least electronegative atom = Phosphorus and its symbol is P.
Most electronegative atom = Hydrogen and its symbol is H.
Prefix used for least electronegative atom = “none” that means only 1 atom.
Prefix used for most electronegative atom = “tri” that means 3 atoms.
Thus, molecular formula for phosphorustrihydride = PH3.
(c)
Interpretation:
The chemical formula of diphosphorous pentoxide needs to be determined.
Concept introduction:
Naming format for covalent binary compounds:
Prefix are used as mono, di, tri, tetra, penta, hexa and so on for the number of each element present in a molecule. Generally, mono prefix is not used while writing the name of covalent compounds as by convection if no prefix is used, then it means there is only 1 atom of that respective element.
Answer to Problem 56QAP
Formula of diphosphorous pentoxideis P2O5.
Explanation of Solution
Chemical name of molecule = Diphosphorous pentoxide
In this chemical compound:
Least electronegative atom = Phosphorous and its symbol is P.
Most electronegative atom = Oxygen and its symbol is O.
Prefix used for least electronegative atom = “di” that means 2phosphorous atoms.
Prefix used for most electronegative atom = “penta” that means 5 oxygen atoms.
Thus, molecular formula for diphosphorous pentoxide= P2O5
(d)
Interpretation:
The chemical formula of radon tetrafluoride needs to be determined.
Concept introduction:
Naming format for covalent binary compounds:
Prefix are used as mono, di, tri, tetra, penta, hexa and so on for the number of each element present in a molecule. Generally, mono prefix is not used while writing the name of covalent compounds as by convection if no prefix is used, then it means there is only 1 atom of that respective element.
Answer to Problem 56QAP
Formula of radon tetrafluorideis RnF4.
Explanation of Solution
Chemical name of molecule = Radon tetrafluoride
In this chemical compound:
Least electronegative atom = Radon and its symbol is Rn.
Most electronegative atom = Fluorine and its symbol is F.
Prefix used for least electronegative atom = “none” that means only 1 radon atom.
Prefix used for most electronegative atom = “tetra” that means 4fluorine atoms.
Thus, molecular formula for radon trifluoride = RnF4.
(e)
Interpretation:
The chemical formula of nitrogen trichloride needs to be determined.
Concept introduction:
Naming format for covalent binary compounds:
Prefix are used as mono, di, tri, tetra, penta, hexa and so on for the number of each element present in a molecule. Generally, mono prefix is not used while writing the name of covalent compounds as by convection if no prefix is used, then it means there is only 1 atom of that respective element.
Answer to Problem 56QAP
Formula of nitrogen trichlorideis NCl3.
Explanation of Solution
Chemical name of molecule = Nitrogen trichloride
Nitrogen is more electronegativethan Cl but due to presence of 3 chlorine atoms, N will behave as electropositive(or least electronegative) atom in this case only.
In this chemical compound:
Least electronegative atom = Nitrogen and its symbol is N.
Most electronegative atom = Chlorine and its symbol is Cl.
Prefix used for least electronegative atom = “none” that means only 1 nitrogen atom.
Prefix used for most electronegative atom = “tri” that means 3 chlorine atoms.
Thus,
Molecular formula for nitrogen trichloride = NCl3.
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Chapter 2 Solutions
OWLv2 for Masterton/Hurley's Chemistry: Principles and Reactions, 8th Edition, [Instant Access], 1 term (6 months)
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