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A C - 12 isotope has a half-life of 40 years. How many years will it t..
A C - 12 isotope has a half-life of 40 years. How many years will it take for 100 gms to decay to 30 gms? => 77 years or 73 years or 67 years or 70 years or 75 years..
Tracer Techniques
Radioisotopes are frequently used as tracers or tagged atoms in various fields. In tracer technique, a radioactive isotope is added to the reactants and its movement is studied by measuring radioactivity in different par..
Structure of the Atom
Isotopes - It is interesting to note that atoms of a given atomic number can have different number of neutrons. Some examples are listed belo..
Problems
10. Calculate the average atomic weight of silicon having 92.2% of Si-28 isotope of relative mass 27.98 amu, 4.7% of Si-29 isotope of relative mass 28.98 amu and 3.1% of Si-30 isotope of relative mass 29.97 am..
Cancer therapy
g - rays emitted by the radioisotopes can be used in the treatment of cancer. These radiations tend to destroy cancerous cells and the way can arrest the spreading of the cancerous cells. 6 0 CO is used in the treatment of tumours and cancers...
g - rays emitted by the radioisotopes can be used in the treatment of cancer. These radiations tend to destroy cancerous cells and the way can arrest the spreading of the cancerous cells. 6 0 CO is used in the treatment of tumours and cancers...Modern definition of atomic mass unit
The mass of 1/12 part of 12 C isotope of carbon is equivalent to one atomic mass uni..
In medicinal diagnosis
In order to find if blood is circulating to a wound or not, a radioactive isotope is injected into the blood stream. After a time period, blood from the wound is examines for its radioactivity. If no radioactive isotope is detected, it means that passage of blood is hindered. T..
Hydrogen
Hydrogen atom (Z=1) has no neutrons. Number of protons = 1 Number of electrons = 1 Number of neutrons = 0 It has been reported that the hydrogen element has atoms with mass number 2 and 3 also i.e., Atoms of elements having the same atomic number with different mass numbers are called isot..
Hydrogen atom (Z=1) has no neutrons. Number of protons = 1 Number of electrons = 1 Number of neutrons = 0 It has been reported that the hydrogen element has atoms with mass number 2 and 3 also i.e., Atoms of elements having the same atomic number with different mass numbers are called isot..Advantages of Long form Periodic Table
1. The classification of elements is based on the atomic number, which is a more fundamental property. 2. The reason for placing isotopes at one place is justified as the classification is on the basis of atomic numbe..
Rule 1
When four different atoms are attached to the chiral carbon, priority depends on atomic number. The atom with the highest atomic number gets top priority. If the two atoms are isotopes of the same element, the atom of higher mass number has higher priorit..
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