Question

Atomic number of metal "A" is 11, while atomic number of metal "B is 20 Which of them will be more reactive? Write the chemical reaction of dilute HCl with metal "A​

Answer 1

HEY MATE,

HERE METAL 'A' WITH NO. 11

SO ELECTRONIC CONFIGURATION = 2,8,1

SO IT HAVE VALENCY '1'.

SO IT RELATES TO GROUP 1 AND 3rd PERIOD.

AND,

METAL 'B' HAVE ATOMIC NO. 20.

ELECTRONIC CONFIGURATION = 2,8,8,2

SO IT RELATED PERIOD 4 AND GROUP 2.

SO, 'A' IS MORE REACTIVE AS REACTIVITY DECREASES FROM LEFT TO RIGHT IN PERIOD.

WHEN A REACT WITH HCl,

A + HCl - ACl + H2

WELL A IS Na.

AND B IS Ca.

I HOPE THIS WILL HELP YOU...

PLS MARK AS BRAINLIEST.