BERYLLIUM:
Beryllium is the element whose atomic number is 4. The beryllium is represented by the symbol Be. The various properties of beryllium are:
PHYSICAL PROPERTIES OF BERYLLIUM:
1. Beryllium exist in nature in solid phase.
2. The density of beryllium is 1.85 g/cm3
3. The melting point of beryllium is 1560 K
4. The boiling point of beryllium is 2742 K
5. The heat of vaporization of beryllium is 297 KJ/mol
CHEMICAL PROPERTIES OF BERYLLIUM:
1. Beryllium is present in various oxidation state like +2 and +1.
2. The electronegativity of beryllium is 1.57 in Pauling scale.
3. The ionization enthalpy of beryllium is as such:
1st ionization enthalpy: 899 KJ/mol
2nd ionization enthalpy: 1757 KJ/mol
3rd ionization enthalpy: 14848 KJ/mol
4. Beryllium is diamagnetic in nature.
5. The crystal structure of beryllium is hexagonal in shape.
4 x 9.1 x 10-31+ 4 x 1.67 x 10-27 + 4 x 1.67 x 10-27 Kg = 1.33636 x 10-26 Kg = 9.01 g/mol.
The structure and this atomic mass makes the beryllium a useful element for the nuclear processes. The following two reactions shows the nuclear properties of Beryllium:
(1) 94Be + n → 2(42He) + 2n
Thsi reaction shows the the behaviour of beryllium to release more neutrons in respect to the number of neutrons absorbed by it.
(2) 94Be + 42He → 126C + n
This reaction shows the production of neutrons by hitting of Beryllium nuclei with alpha particles.
1. The use of beryllium is to tune the klystrons, magnetrons and travelling wave tubes.
2. Beryllium is used in nuclear weapon design.
3. It used for the manufacture of high frequency speaker drive.
4. It is used as a p-dopent semiconductor material in the electronic industry.
5. The compounds of beryllium are used in the flouroscent tube lights.
Beryllium is the element whose atomic number is 4. The beryllium is represented by the symbol Be. The various properties of beryllium are:
PHYSICAL PROPERTIES OF BERYLLIUM:
1. Beryllium exist in nature in solid phase.
2. The density of beryllium is 1.85 g/cm3
3. The melting point of beryllium is 1560 K
4. The boiling point of beryllium is 2742 K
5. The heat of vaporization of beryllium is 297 KJ/mol
CHEMICAL PROPERTIES OF BERYLLIUM:
1. Beryllium is present in various oxidation state like +2 and +1.
2. The electronegativity of beryllium is 1.57 in Pauling scale.
3. The ionization enthalpy of beryllium is as such:
1st ionization enthalpy: 899 KJ/mol
2nd ionization enthalpy: 1757 KJ/mol
3rd ionization enthalpy: 14848 KJ/mol
4. Beryllium is diamagnetic in nature.
5. The crystal structure of beryllium is hexagonal in shape.
Atomic Mass of Beryllium
The atomic mass of Beryllium is 9.01 g/mol. The atomic mass of Beryllium is the sum of the masses of all the electrons, protons and the neutrons. Since, there are 4 electrons present in one atom of Beryllium. Therefore, the number of protons are same in number that is 4 to neutralize the -ve charge of electrons. The rest mass addition is due to the presence of neutrons in the atom. The mass of each electron is 9.1x 10-31 Kg. Mass of each proton is 1.67 x 10-27 Kg. The mass of each neutron is 1.67 x 10-27 Kg.4 x 9.1 x 10-31+ 4 x 1.67 x 10-27 + 4 x 1.67 x 10-27 Kg = 1.33636 x 10-26 Kg = 9.01 g/mol.
The structure and this atomic mass makes the beryllium a useful element for the nuclear processes. The following two reactions shows the nuclear properties of Beryllium:
(1) 94Be + n → 2(42He) + 2n
Thsi reaction shows the the behaviour of beryllium to release more neutrons in respect to the number of neutrons absorbed by it.
(2) 94Be + 42He → 126C + n
This reaction shows the production of neutrons by hitting of Beryllium nuclei with alpha particles.
Uses of Beryllium
The various uses of beryllium are:1. The use of beryllium is to tune the klystrons, magnetrons and travelling wave tubes.
2. Beryllium is used in nuclear weapon design.
3. It used for the manufacture of high frequency speaker drive.
4. It is used as a p-dopent semiconductor material in the electronic industry.
5. The compounds of beryllium are used in the flouroscent tube lights.
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