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Doping is the process of adding impurity atoms to intrinsic silicon or germanium to improve the conductivity of the semiconductor. The term impurity is used to describe the doping elements. Two ...
There are 25 atoms in 5CH4. This is because each methane molecule (CH4) contains 5 atoms (1 carbon atom and 4 hydrogen atoms), so when you have 5 molecules of CH4, you have a total of 5 x 5 = 25 ...
Trivalent atoms are often referred to as having a valency of 3. This means they can form three chemical bonds with other atoms. Examples of trivalent atoms include boron, aluminum, and nitrogen.
Molecules are every where. Most objects in the universe are made of atoms; and atoms are the base structure of molecules. For example, Hydrogen is an atom and exists as the molecule H2. Water is ...
A pure substance is a form of matter that has a definite composition and distinct properties. It may consist of only one type of atoms (examples: Fe(s), N2(g), S8(s)), or of only one compound ...
Large molecules such as proteins, DNA, and some polymers can have more than 1000 atoms. Examples include hemoglobin (a protein with about 10,000 atoms), DNA (with millions of atoms in a single ...
A hydrocarbon is a type of molecule that contains only carbon and hydrogen atoms. Examples include methane (CH4), ethane (C2H6), and octane (C8H18).
A tetravalent element is an elemental atom with four electrons available to form bonds with other atoms. Good examples are carbon and silicon; their tetravalance allows them to form highly complex ...
For example, ionic compounds such as sodium chloride (NaCl) consist of a metal atom (sodium) and a non-metal atom (chlorine), while covalent compounds like water (H2O) can consist of non-metal ...
With three carbon atoms, dihydroxyacetone is the simplest of all ketoses and is the only one having no optical activity. Ketoses can isomerize into an aldose when the carbonyl group is located at ...