Question

atomic no. 17 19 10 which one is non metal metal chemically inert write the formula

Answer 1

17 Cl non metal 2,8,7 as it gain electron
19 potassium metal 2,8,8,1 as looses e
10 neon inert 2,8 complete k l shells

Answer 2

hey friends,
answer is
atomic no. of 17 is chlorine which atomic mass is 35.5
atomic no. of 19 is potassium but this is metal it's atomic mass is 39.1
atomic no. of 10 is neon it's atomic mass is 20.2