do we have to learn whole periodic table for exam
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No it is not required.
But it would be convenient for you if you keep in mind elements with their atomic number and atomic masses from 1 to 20. ( i was telling for 10th standard)
But if asking about 11, 12 class it would be better for you to revise s and p block elements.
But mostly, element's atomic number and masses are provided with question.
But better to prepare ourself in advance....rite?
....With regards.......
But it would be convenient for you if you keep in mind elements with their atomic number and atomic masses from 1 to 20. ( i was telling for 10th standard)
But if asking about 11, 12 class it would be better for you to revise s and p block elements.
But mostly, element's atomic number and masses are provided with question.
But better to prepare ourself in advance....rite?
....With regards.......
Anonymous:
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