What is the value of Rydberg constant?

What is the value of constant of proportionality?

What is the value of constant (mu_0)/(4pi) ?

What is the unit of dielectric constant?

What is the range of the constant function 1?

The value of Henry's constant K_H

Balmer gave an equation for wavelegth of visible region of H-spectrum as lambda=(Kn^(2))/(n^(2)-4). Where n= pricipal quantum number of energy level, K=constant in terms of R (Rydberg constant). The value of K in term of R is :

What is the unit of rate constant for second order reaction ?

Calculate the value of universal gas constant R in two different units.