Question

the electronic configuration of metal a is 2,8,1 and that of metal b is 2,8,2 which of the following metal is more reactive write their reaction with dilute sulphuric acid​

Answer 1

Answer:

the metal which have electronic configuration 2,8,1 is sodium(Na) and the metal which have electronic configuration 2,8,2 is magnesium(Mg)

Sodium is more reactive as it is above in reactivity series than magnesium.

Na + H2SO4 _ forms Na2So4 + h2 ( hydrogen gas)

(sodium sulphate)

Mg + H2SO4_ forms MgSO4 + H2

(magnesium sulphate) + hudrogen gas

in both the equations hydrogen gas is evolved.

because when metals reacts with acid they form salt + h2 gas