Question

the atomic radii of three elementsA,B&C of a periodic table are 186pm,104pm,143pm respectively. Giving a reason,arrange these elements in the increasing order of atomic number in the period.​

Answer 1

The higher the atomic radius the higher the atomic number 

A = 186 pm

B = 104 pm

C =143 

When we convert it into increasing atomic radius then first will be B then C and then the biggest A 

B C A

mark brainliest plzzzzzzz

Answer 2

in moving from left to right in a period, the atomic radius of elements decreases.therefore the increasing order of their atomic no. will be- A(186) <C(143)<B(104)