write the symbols atomic number mass number and valency of any five element

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Solution

$S y m b o l = C l A t o m i c n u m b e r o f C h l o r i n e = 17 M a s s n u m b e r o f C h l o r i n e = 35.5 V a l e n c y = 1 S y m b o l = O A t o m i c n u m b e r o f o x y g e n = 8 M a s s n u m b e r o f o x y g e n = 16 V a l e n c y = 2 S y m b o l = N a A t o m i c n u m b e r o f s o d i u m = 11 M a s s n u m b e r o f s o d i u m = 23 V a l e n c y = 1 S y m b o l = N e A t o m i c n u m b e r o f N e o n = 10 M a s s n u m b e r o f N e o n = 20 V a l e n c y = 0 S y m b o l = F A t o m i c n u m b e r o f F l u o r i n e = 9 M a s s n u m b e r o f F l u o r i n e = 19 V a l e n c y = 1$

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