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Plz tell the answer of this question.... Plz don't give any irrelevant answers.... |
Answer» At first write the ELECTRONIC CONFIGURATION of an element. From ATOMIC number 1 to 20 the element with 1-2 electrons in outermost shell is metal. Element with 3-4 electrons may be metal non-metal or metalloid. But the ELEMENTS with 5-7 electrons in OUTER most shell is essentially non-metal |
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