can anyone tell me the trick to learn valency of elements?????upto 20 i know a trick but after tgat upto 30 plzzz tell...
don't post any stupid ans plzzz
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can anyone tell me the trick to learn valency of elements?????upto 20 i know a trick but after tgat upto 30 plzzz tell...
don't post any stupid ans plzzz
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can often help to physically point at each row as you examine it in order to develop an instinctive feel for the arrangement of the chart. Look at the leftmost column on the periodic table. It is the start of the table and the top element is hydrogen -- the building block of matter as we understand it.