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3 years ago

Categorize each hydrocarbon as being saturated or unsaturated.

Chemistry

2 answers:

Bad White [126]3 years ago

8 0

<h3>Answer:</h3>

Saturated: i) 3-Methyloctane ii) Heptane iii) Propane

Unsaturated: i) Heptyne ii) Cyclopentene

<h3>Explanation:</h3>

Saturated Hydrocarbons are those organic compounds which are saturated <em>i.e. </em>all the bonds between carbon atoms are single. In other words the bonds between carbon atoms are sigma bonds (formed due to head to head overlap of orbitals)

Examples of Saturated Hydrocarbons are highlighted in Red color in attached figure.

Unsaturated Hydrocarbons are those organic compounds which are unsaturated <em>i.e. </em>they contain either one or more than one double or triple bonds along with or without single bonds.. In other words one or more bonds between carbon atoms are pi bonds (formed due to side wise overlap of p orbitals)

Examples of unsaturated Hydrocarbons are highlighted in Blue color in attached figure.

MA_775_DIABLO [31]3 years ago

6 0

Answer:

For PLATO: they left out one

Saturated: 3-Methyloctane, Heptane, Propane

Unsaturated: Propyne, Heptyne, Cyclopentene

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3 years ago

How many core electrons are in a ground state atom of selenium?

Harman [31]

Electrons in an atom can be classified as core electrons and valence electrons. Valence electrons are those electrons which are present in valence shell and participates in bond formation. While, Core electrons are all remaining electrons which are not present in valence shell, hence not take part in bonding.

Atomic number of Selenium (Se) is 34 hence it has 34 electrons with following electronic configuration;

1s², 2s², 2p⁶, 3s², 3p⁶, 4s², 3d¹⁰, 4p⁴

From electronic configuration it is found that the valence shell is 4, and the number of electrons present in valence shell are 6. So,

Core Electrons = Total Electrons - Valence Electrons

Core Electrons = 34 - 6

Core Electrons = 28

Result:
There are 28 core electrons in Selenium.

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