Description : Why was the system of classification of elements into triads not found suitable? -Science
Last Answer : it is because all the elements discovered at that time could not be classified into triads.
Description : Iron which resembles Cobalt and Nickel in properties has been placed far away from these elements. This was one of the limitations of : (1) Modern periodic table (2) Newland's law of octaves (3) Dobereiner's triads (4) Mendeleev's periodic table
Last Answer : (2) Newland's law of octaves Explanation: Among the major limitations of Newlands Law of Octaves, some similar elements have been separated from one another while some dissimilar elements have been placed in the same column.
Description : What are the limitations of Dobereiner’s law of triads?
Last Answer : Dobereiner’s classification was not satisfactory, as he failed to arrange all of the then known elements in the form of triads. He could identify only three triads from the elements known at that time
Description : Explain Dobereiner’s law of triads with an example.
Last Answer : According to Dobereiner's law of triads: When elements are arranged in the order of increasing atomic masses in groups of three elements, the atomic mass of the middle element of the triad is equal to the ... Average atomic mass = 177 2 88.5 The atomic mass of middle element Strontium = 88
Description : What are triads?
Last Answer : Elements arranged in group of three are called triads.
Description : State Dobereiner’s law of triads.
Last Answer : According to Dobereiner’s law of triads: When elements are arranged in the order of increasing atomic masses in groups of three elements, the atomic mass of the middle element of the triad is equal to the average atomic mass of the other two elements.
Description : DRAWBACK OF DOBEREINER’S TRIADS:-
Last Answer : Only known some triads elements are identify from Dobereiner’s triads. Other triads did not obey Dobereiner’s rule. Hence, it is not useful.
Description : Why are transistors better than triads ?
Last Answer : Both triodes and transistors act as amplifiers. But due to the large size of the triode valve, there is a problem in installing it in the electronic device. This requires more energy ... and cooling system. But transistors do not have these problems. So transistors are better than triodes.
Description : What are 10 Pythagorean triads using whole numbers?
Last Answer : 3,4,5;9,40,41;6,8,10;5,12,13;30,40,50;90,120,150;10,24,26 Ithink that is 10 if not 300,400,500 and 20,48,52
Description : What are Dobereiner’s triads? Give example of 2 triads.
Last Answer : Ans: he arranged the elements in several sets of 3 elements .these sets were called triads which resembled with each other in chemical properties and atomic mass of the middle element was approx the mean of the atomic masses ... 35.5 +127)/2 =81.25 (ii) Calcium (40) ,strontium(88.5) and barium (137)
Description : Who Classified Elements based on atomic number?
Last Answer : Moseley
Description : Who Classified Elements based on atomic weight?
Last Answer : Mendeleev
Description : Who Classified Elements as Metals and non-metals?
Last Answer : Lavoisier
Description : The scientist who classified elements based on Atomic Values is?
Last Answer : Lothar Meyer
Description : Elements are classified into?
Last Answer : Metals; non-metals and metalloids
Description : The person in 1815 who suggested in that elements can be classified on the basis of atomic mass was
Last Answer : William Prout.
Description : How elements are classified based on electronic configuration?
Last Answer : Based on electronic configuration, all elements are grouped into four categories. They are ‘s block’, ‘p block’, ‘d block’ and ‘f block’ elements.
Description : The atomic masses of three elements X, Y and Z having similar chemical properties are 7, 23 and 39 respectively. a) Calculate the average atomic mass of elements X and Z. b) How is the ... this example? d) Give another example of a set of elements which are classified according to this law.
Last Answer : a) The average atomic mass of X and Z = 7 39 2 46 2 23 b) The average atomic mass of X and Z is equal to the atomic mass of Y c) The law illustrated in this example is Dobereiner’s law of triads. d) Another example of Dobereiner’s law is Calcium, Strontium and Barium.
Description : The binary compounds of oxygen with other elements are called oxides. They are classified depending either upon their acid-base characteristics or on
Last Answer : The binary compounds of oxygen with other elements are called oxides. They are classified depending either upon their acid- ... . `H_(2)O` D. `CO_(2)`
Last Answer : The binary compounds of oxygen with other elements are called oxides. They are classified depending either upon their ... P_(2)O_(5)` D. `FeO, CuO`
Last Answer : The binary compounds of oxygen with other elements are called oxides. They are classified depending either upon their ... `Mn_(3)O_(4),N_(2)O_(5)`
Last Answer : The binary compounds of oxygen with other elements are called oxides. They are classified depending either upon their ... C. CO,NO D. `Na_(2),CaO`
Last Answer : The binary compounds of oxygen with other elements are called oxides. They are classified depending either upon their acid- ... . `N_(2)O, C_(3)O_(2)`
Description : What are the elements sodium and chlorine classified?
Last Answer : Sodium is an alkali metal solid, chlorine is a halogen gas.
Description : Components made up exclusively of discrete elements are classified as what type of electronics?
Last Answer : Miniature.