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Generally reactivity of a metal is compared with that of another metal and same is true for non- metals too. There are several factors that determine the reactivity of an element such as size of the atom, number of electrons in outermost shell and so on. The number of shells remain same along a periRead more
No. Just to become popular to all parents and students if the school gives A and A+ to all students, both parties the students and the school loose the credit. The trust they have gained till date will go to zero. Schools should try to be as fair as possible. Yes, in the past some students were unabRead more