Periodic Classification Of Elements
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137
Modem periodic law states that properties of elements are a periodic function of their ato...
By romiroy12, 5 years ago
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139
There are 7 groups and 18 periods in a modem periodic table. (True/False)
By romiroy12, 5 years ago
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196
Mendeleev arranged all the 63 known elements in increasing order of their atomic masses. (...
By romiroy12, 5 years ago
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310
Diagonal elements from boron to polonium are known as _________.
By romiroy12, 5 years ago
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173
Dobereiner’s system of classification was failed to arrange all the elements in the form o...
By romiroy12, 5 years ago
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143
Group ________ locate the element with electronic configuration 2, 7 in the modem periodic...
By romiroy12, 5 years ago
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282
When an element from the left side of the periodic table combines with an elements from th...
By romiroy12, 5 years ago
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187
Those elements which have the same valence shell, belongs to the same __________ of the pe...
By romiroy12, 5 years ago
replies 1
0
1
140
On going down in a group of the periodic table, the size of atoms _________.
By romiroy12, 5 years ago
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1224
Assertion: There are 118 elements discovered so far. Reason: Sulphur (16) belongs to Group...
By romiroy12, 5 years ago
replies 1
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