An accelerated electron has a speed of 5 $$\times$$ 10⁶ ms^$$-$$1 with an uncertainty of 0.02%. The uncertainty in finding its location while in motion is x $$\times$$ 10^$$-$$9 m. The value of x is ____________. (Nearest integer)

[Use mass of electron = 9.1 $$\times$$ 10^$$-$$31 kg, h =6.63 $$\times$$ 10^$$-$$34 Js, $$\pi$$ = 3.14]

Number of electrons present in 4f orbital of Ho³⁺ ion is ____________. (Given Atomic No. of Ho = 67)

Consider the above chemical reaction. The total number of stereoisomers possible for Product 'P' is _____________.

For a chemical reaction A $$\to$$ B, it was found that concentration of B is increased by 0.2 mol L^$$-$$ in 30 min. The average rate of the reaction is ____________ $$\times$$ 10^$$-$$1 mol L^$$-$$1 h^$$-$$1. (in nearest integer)