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What is a lone pair of electrons?
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Draw an electron dot diagram of a hydronium ion and label the lone pair of electrons.
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What is the term defined below?
A bond formed by a shared pair of electrons with both electrons coming from the same atom.
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By drawing an electron dot diagram, show the lone pair effect leading to the formation of the ammonium ion from ammonia gas and hydrogen ion.
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Give suitable chemical terms for the bond formed by a shared pair of electrons with both electrons coming from the same atom.
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Bonding in this molecule can be understood to involve coordinate bonding.
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Give the names of the first four members of the homologous series of
alkynes.
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Give three points to differentiate between saturated and unsaturated
hydrocarbons.
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Copy and complete the following table, which relates to the three homologous series of hydrocarbons:
| General formula | CnH2n | CnH2n-2 | CnH2n+2 |
| IUPAC name of the homologus series | |||
| Characteristic bond type | Single bonds | ||
| IUPAC name of the first member of the series | |||
| Type of reaction with chlorine | Addition |
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What are the term defined below?
A bond formed by a shared pair of electrons with both electrons coming from the same atom.
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Write the name and formula of the fourth member of the following homologous series:
Alkyne
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What is a homologous series?
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What is the difference in the molecular formula of any two adjacent homologues:
(i) In terms of molecular mass
(ii) In terms of number and kind of atoms per molecule?
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Haloalkanes react with alkalies to produce alcohol. Give the equation for the preparation of the second member of the homologous series of alcohol. State under what condition the reaction occurs.
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Name the following organic compound:
The first homologue whose general formula is CnH2n.
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Study and complete the following table:
| Homologous series | Alkane | Alkyne |
| General formula | CnH2n+2 | 1. ______ |
| IUPAC name | 2. ______ | Ethyne |
| Common name | Marsh gas | 3. ______ |
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Name the following:
Group of organic compounds where the successive members follow a regular structural pattern, successive compounds differ by a 'CH2' group.
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Give reason for the following:
Covalent compounds have a low melting and boiling point.
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Identify the following:
A bond formed between two atoms by sharing of a pair of electrons, with both electrons being provided by the same atom.
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Select the ion in the following case, that would get selectively discharged from the aqueous mixture of the ions listed below:
\[\ce{SO^2-_4, NO^-_3 {and} OH-}\]
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