Explain various chemical formulas, Biology

Assignment Help:

Explain various chemical formulas?

Chemical Formulas

A molecule can be represented in any of three ways: its chemical formula, structural formula, or Lewis diagram. A chemical formula is a type of shorthand which designates the composition of molecules. The formula contains the symbols of the constituent atoms and their ratio in the compound. If more than one atom of the same type is present, the number is indicated by a subscript following the symbol. Occasionally, atoms join covalently to form polyatomic ions, or radicals. These groups are surrounded by parentheses in the chemical formula.

1249_Formulas.png

Structural formulas and Lewis diagrams give information about the arrangement of atoms in the molecule. The sharing of two electrons by two atoms in a covalent bond, is represented by a line drawn between the atoms in a structural diagram, and by two dots denoting the electrons in a Lewis diagram.

1845_example of isomer.png

 Although the chemical composition is given in the formulas, many complicated molecules can have various arrangements of the same atoms. A structural formula is required to describe these different structures, called isomers.

The chemical formula for ionic compounds is written with a superscript designating the charge on each atom or polyatomic particle as follows:

406_sodium chloride.png


Related Discussions:- Explain various chemical formulas

What volume of 1.20 m naoh solution must we add, You have 875 mL of a 0.37 ...

You have 875 mL of a 0.37 M acetic acid solution. What volume (V) of 1.20 M NaOH solution must you add in order to prepare an acetate buffer of pH = 4.36? (The pKa of acetic acid i

Why urea is known to denature proteins, Urea is known to denature proteins ...

Urea is known to denature proteins Based on the structure of urea, how do you think this occurs?

Define role of lipids in controlling gene expression, Define role of Lipids...

Define role of Lipids in Controlling Gene Expression? In the lipogenic pathway, the genes that encode the enzymes of the fatty acid synthase complex are co-ordinately expressed

How vibrio parahaemolyticus spread in humans, How VIBRIO PARAHAEMOLYTICUS s...

How VIBRIO PARAHAEMOLYTICUS spread in humans Associated foods:- Vehicle foods for outbreak are raw, improperly cooked, or  cooked recontaminated seafoods, such as, oysters, s

What do you mean by insect control, Q. What do you mean by Insect control? ...

Q. What do you mean by Insect control? The insects can breed and hide in garbage and other places where there is availability of waste materials. The cockroach lives and breed

Define the functional properties of proteins, Define the Functional Propert...

Define the Functional Properties of Proteins? a) Hydration properties (dependent on protein-water interactions), which include properties like swelling, adhesion, dispersibilit

Why iodine is important for human body, Why Iodine is Important for Human B...

Why Iodine is Important for Human Body? Iodine is an essential constituent of the thyroid hormones: thyroxine (T 4 ) and triiodothyronine (T 3 ), which have a key role in growt

List some points to keep in mind while counselling, Q. List some points to ...

Q. List some points to keep in mind while counselling? 1. Judgment Do not be judgemental. Be a patient listener. Assess and make decision. 2. Patience and Acceptance

Effects on aquatic organisms - water pollution, Effects on Aquatic Organism...

Effects on Aquatic Organisms - Water Pollution Toxic water pollutants such as metals, pesticides, insecticides and chemicals affect aquatic species directly whereas the non-t

Fluids requirement during congestive cardiac failure, Q. Fluids requirement...

Q. Fluids requirement during congestive cardiac failure? Fluids: Fluid intake should be monitored in accordance with urine output and severity of oedema. Fluid restriction is

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd