Question

most reactive element is
(1)Na
(2)Cs
(3)Fe
(4)Hg​

Answer 1

hey friend your answer↓

1.Na

hope it helps you!

Answer 2

Answer:

(1) Na

Explanation:

Sodium is most reactive element among all the given elements.

K                Potassium                   Most reactive

Na             Sodium                                  ↑

Ca             Calcium                                  

Mg            Magnesium

Al              Aluminium

Zn            Zinc

Fe            Iron

Sn            Tin

Pb            Lead

Cu            Copper

Hg            Mercury

Ag            Silver                                      ↓

Au            Gold                            Least reactive

Note- Sodium (Na) is highly reactive element, when it come in contact with water is start burning. Therefore it is kept in kerosene.

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