A small square loop of wire of side 'I' is placed inside a large square loop of side L (L > I). If the loops are coplanar and their centres coincide, the mutual inducation of the system is directly proportional to

Options

A. l//L
B. `l^(2)//L`
C. `l//L^(2)`
D. `l^(2)//L^(2)`

Explanation

A small square loop of wire of side l is placed inside a large square loop, then mutual induction of the system depends upon. `
M prop (l^(2))/(L)`
increases, that holds the ns - electrons tightly so that they do not participate in bonding (inert pair effect).
Due to inert pair effect, Tl in + 1 oxidation state is more stable than that of + 3 oxidation state.