Which element contains the largest number of neutrons per atom?
a. bismuth-210 b. polonium-210c. astatine-210 d. astatine-211

a. Bismuth-210  have 127 neutrons

Explanation:

Atomic Structure:  

Atom is the smallest particle of an element.

it consists of Two portion i.e. orbitals and Nucleus

•orbitals have particles called electrons

•nucleus have neutrons and proton in it

overall particals are

So

Atomic Number:

The number of electrons or proton (number of electrons equal to the number of proton in an atom of element)

                               Atomic Number = Electron or Proton

Atomic Mass:

Atomic mass is the number of proton plus neutron in the nucleus.

                            Atomic Mass = Proton + neutron

Isotopes:

The atom having same atomic number and different atomic mass. This is because it have same number of protons and electrons but different number of neutrons.

So keeping in view the above details one can find out number of proton neutron or electron from its atomic mass and atomic number

A)

Number of neutron Bismuth-210:

This is an isotope of Bismith (Bi)

Atomic number of Bi = 83

Atomic Mass of Bi isotope = 210

Number of neutrons = Atomic Mass - Atomic number

Number of neutrons = 210 - 83

Number of neutrons in Bi= 127

B)

Number of neutron Polonium-210:

This is an isotope of Polonium

Atomic number of Po= 84

Atomic Mass of Po Isotop = 210

Number of neutrons = Atomic Mass - Atomic number

Number of neutrons = 210 - 84

Number of neutrons in Po= 126

C)

Number of neutron Astatine-210:

This is an isotope of At

Atomic number of At= 85

Atomic Mass of At Isotop = 210

Number of neutrons = Atomic Mass - Atomic number

Number of neutrons = 210 - 85

Number of neutrons in At= 125

D)

Number of neutron Astatine-211:

This is an isotope of At

Atomic number of At= 85

Atomic Mass of At Isotop = 211

Number of neutrons = Atomic Mass - Atomic number

Number of neutrons = 211 - 85

Number of neutrons in At= 126

So

Bismuth-210 have more neutrons than Polonium-210, Astatine-210, Astatine-211

explanation:

the largest database of organic compounds lists about 10 million substances, which include compounds originating from living organisms and those synthesized by chemists. the number of potential organic compounds has been estimated at 1060—an astronomically high number. the existence of so many organic molecules is a consequence of the ability of carbon atoms to form up to four strong bonds to other carbon atoms, resulting in chains and rings of many different sizes, shapes, and complexities. the simplest organic compounds contain only the elements carbon and hydrogen, and are called hydrocarbons. even though they are composed of only two types of atoms, there is a wide variety of hydrocarbons because they may consist of varying lengths of chains, branched chains, and rings of carbon atoms, or combinations of these structures. in addition, hydrocarbons may differ in the types of carbon-carbon bonds present in their molecules. many hydrocarbons are found in plants, animals, and their fossils; other hydrocarbons have been prepared in the laboratory. we use hydrocarbons every day, mainly as fuels, such as natural gas, acetylene, propane, butane, and the principal components of gasoline, diesel fuel, and heating oil. the familiar plastics polyethylene, polypropylene, and polystyrene are also hydrocarbons. we can distinguish several types of hydrocarbons by differences in the bonding between carbon atoms. this leads to differences in geometries and in the hybridization of the carbon orbitals.

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