write the property of dobereinrs triads
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In 1817 a German chemist Johann Wolfgang Döbereiner arranged the elements with similar properties into groups.
Some groups were identified having three elements each. So he called these groups ‘triads’. Only three triads could be identified from the elements discovered at that time.
On writing the three elements of the triad in the order of increasing atomic masses it was found that the atomic mass of the middle element was approximately the average of the atomic masses of the other two elements.
S. No.
Element with Symbol
1.
Lithium (Li)
Sodium (Na)
Potassium (K)
2.
Calcium (Ca)
Strontium (Sr)
Barium (Ba)
3.
Chlorine (Cl)
Bromine (Br)
Iodine (I)
4.
Sulphur (S)
Selenium (Se)
Tellurium (Te)
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Some groups were identified having three elements each. So he called these groups ‘triads’. Only three triads could be identified from the elements discovered at that time.
On writing the three elements of the triad in the order of increasing atomic masses it was found that the atomic mass of the middle element was approximately the average of the atomic masses of the other two elements.
S. No.
Element with Symbol
1.
Lithium (Li)
Sodium (Na)
Potassium (K)
2.
Calcium (Ca)
Strontium (Sr)
Barium (Ba)
3.
Chlorine (Cl)
Bromine (Br)
Iodine (I)
4.
Sulphur (S)
Selenium (Se)
Tellurium (Te)
❤Hope it helps❤
Mark it as Brainliest if you liked!!
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