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2 years ago

How does the number of substituents around a central atom affect the shape of a molecule?

1 answer:

4 0

Explanations:- The shape of the molecule depends on bonding groups and lone pair of electrons present in the central atom. We do the sum of these bonding groups and lone pair of electrons for the shape of the molecule. The presence of lone pair of electrons affects the shape (molecular geometry) of the molecule.

For example, methane is tetrahedral as four hydrogen atoms are bonded to carbon and there is no lone pair of electrons present on C. Here, the sum of bonding groups and lone pairs is 4.

On the other hands, in water, two H atoms are bonded to the central oxygen atom and also there are two lone pair of electrons present on oxygen atom. The sum is also 4 here but the molecular geometry is bent. The difference in geometries of these two molecules is because of the repulsion between the two lone pairs present on oxygen atom.

If we take an example of boron hydride then three H atoms are bonded to B and there is no lone pair of electrons present on B. The sum is 3 and so it's shape is trigonal planar.

So, the number of bonded atoms as well as the number of lone pairs present on the central atom decides the shape of the molecule.

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Determine if the following two structures are identical, isomers, or unrelated? OH O CH3CHCH2CH3 CH3CH2CCH3

user100 [1]

Answer:

I think they are unrelated.

Explanation:

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2 years ago

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Classify the compound below as an alkane, alkene, alkyne, alcohol, aldehyde, amine, and so forth

Gnoma [55]

Answer:

Organic compounds are those which are derivatives of hydrocarbons. They are classified into following functional groups.

Alkane:

Alkane are simplest hydrocarbons.
They have general formula CnH2n+2. These hydrocarbons contain single bond.
For example ethane , H3C----CH3.

Alkene:

Alkene are most reactive.
They have general formula CnH2n.
These contain double bond in their structure.
For example , ethene, H2C=CH2

Alkyne:

These are less less reactive as compare to alkenes.
They have general formula CnH2n-2.
They contain triple bonds in their structure.
For example Acetylene HC≡CH

Alcohol:

Alcohol have functional group OH. They have general formual R---OH, R may be alkyl group.For example Ethanol H3CH2C---OH

Amine:

Amine contain NH2 F.G.
They have general formula R---NH2.
There are three types of amine like primary, secondary and tertiary amine.
For example H3CH2C---NH2

Aldehyde:

Aldehydes have CHO F.G .
They have general formula R--CHO.
For example H3CH2C---CHO

Ketone:

Ketones have R--CO--R functional group.
For example acetone H3C---CO---CH3

Carboxylic acid:

They functional group COOH.
Their general formula is R---COOH.
For example Acetic acid H3C---COOH

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2 years ago

What is water molecules (H2O) an example of?

Allisa [31]

Answer:

the answer is a) pure substance

Explanation:

water is natural

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2 years ago

Electron configuration of br-1

lubasha [3.4K]

Answer:

Hi myself Shrushtee

Explanation:

The electron configuration of Br- is [Ar] 3d10 4s2 4p6

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2 years ago

Select the correct answer.

Nuetrik [128]

Answer:

A binary covalent compound is composed of two different elements (usually nonmetals). For example, a molecule of chlorine trifluoride, ClF3 contains 1 atom of chlorine and 3 atoms of fluorine.

Rule 1. The element with the lower group number is written first in the name; the element with the higher group number is written second in the name. Exception: when the compound contains oxygen and a halogen, the name of the halogen is the first word in the name.

Rule 2. If both elements are in the same group, the element with the higher period number is written first in the name.

Rule 3. The second element in the name is named as if it were an anion, i.e., by adding the suffix -ide to the root of the element name (e.g., fluorine = F, "fluoride" = F-; sulfur = S, "sulfide" = S2-).

Rule 4. Greek prefixes are used to indicate the number of atoms of each element in the chemical formula for the compound. Exception: if the compound contains one atom of the element that is written first in the name, the prefix "mono-" is not used.

Explanation:

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