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How i will recognise a metal and nonmetal ?

Dear student,
There are many ways to recognise metals and non metals ; out of all few important ways are as follows ;
METALS have :  (i)  1/2/3 no of valence electrons 
                             (ii) valency = 1/2/3  
                             (iii) form cation by loosing electrons
NON METALS have : (i) 4 - 8 no. of valence electrons 
                                      (ii) valency = 4 /3 /2//1/0
                                     (iii)  form anions by gaining the electrons
Regards

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If an element have more than 4 electrons in its outermost shell than it will be considered as non-metal and an element having less than 4 electrons in its outermost shell it will be a metal.
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Metal are malleable and ductile lustrous and non meral are non malleable non ductile and non lustrous
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If an element have more than 4 electrons in its outermost shell than it will be considered as non-metal and an element having less than 4 electrons in its outermost shell it will be a metal.
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If an element have more than 4 electrons in its outermost shell than it will be considered as non-metal and an element having less than 4 electrons in its outermost shell it will be a metal.
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