Question

Choose the odd one from the following:

(i) He, Ne, Cl, Ar
(ii) Li, Na, K, Ca

(iii) F, Cl, Br, Na
(iv) H, Li, He

(v) Ti, Zr, Hf, F​

Answer 1

Answer:

(I) Cl

(II) Ca

(III) He

(IV) F

Answer 2

Answer:

I) Cl

II) K

III) F

iv) H

v) F