How do you classify elements into metals and non metals on the basis of their electronic configuration? Choose metal and non metal out of the following? _11^23A,_9^19B,_12^24C,_15^51D,_17^35E

How do you classify elements into metals and non metals on the basis o

1.	How do you classify elements into metals and non metals on the basis of their electronic configuration? Choose metal and non metal out of the following? _11^23A,_9^19B,_12^24C,_15^51D,_17^35E
Answer» Solution :Elements which contain 1 to 3 electrons in their outermost SHELL are METALS. Elements containing 4 to 7 electrons in their valence shell are NON metals. Electronic configurations: `_11^23A(Z=11)=2,8,1_9^19B(Z=9)=2,7` `_12^24C(Z=12)2,8,2 _15^31D(Z=15)=2,8,5` `_17^35 E (Z=17)=2,8,7` HEnce A and C are metals WHEREAS, B D and E are non metals.