Periodic Classification Of Elements
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An element has 12 protons. The group and period to which this element belongs to is
By romiroy12, 5 years ago
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390
The metal which is hard and has high melting point and used in filaments of electrical bul...
By romiroy12, 5 years ago
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136
The atom of an element has electronic configuration 2, 8, 7. To which of the following ele...
By romiroy12, 5 years ago
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160
Which of the following set of elements is written in order of their increasing metallic ch...
By romiroy12, 5 years ago
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429
Which one of the following statements is not correct about the trends in the properties of...
By romiroy12, 5 years ago
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196
An element ‘A’ belongs to the third period and group 16 of the Periodic Table. Find out th...
By romiroy12, 5 years ago
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184
Consider the following elements 20Ca, 8Or 18Ar, 16S, 4Be, 2He Which of the above elements ...
By romiroy12, 5 years ago
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206
An element X has mass number 40 and contains 21 neutrons in its atom. To which group of th...
By romiroy12, 5 years ago
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