Advertisements
Advertisements
प्रश्न
Calculate the uncertainty in position of an electron, if Δv = 0.1% and υ = 2.2 × 106 ms-1
Advertisements
उत्तर
Mass of an electron = m = 9.1 × 10-31 kg.
∆v = Uncertainty in velocity = `0.1/100` × 2.2 × 103 ms-1
∆υ = 0.22 × 104 = 2.2 × 103 ms-1
∆x . ∆υ . m = `"h"/(4π)`
∆x = `"h"/(∆"υ" . "m". 4π)`
= `(6.626 xx 10^-34)/(2.2 xx 10^3 xx 9.1 xx 10^-31 xx 4 xx 3.14)`
= `(6.626 xx 10^-34 xx 10^3 xx 10^31)/(2.2 xx 9.1 xx 4 xx 3.14)`
= `(6.626 xx 10^-6)/(251.45)`
= 0.02635 × 10-6
∆x = 2.635 × 10-8
Uncertainty in position = 2.635 × 10-8
APPEARS IN
संबंधित प्रश्न
Electronic configuration of species M2+ is 1s2 2s2 2p6 3s2 3p6 3d6 and its atomic weight is 56. The number of neutrons in the nucleus of species M is
The maximum number of electrons in a sub shell is given by the expression
If n = 6, the correct sequence for filling of electrons will be,
How many electrons in an atom with atomic number 105 can have (n + 1) = 8?
The energy of an electron in the 3rd orbit of hydrogen atom is –E. The energy of an electron in the first orbit will be
Consider the following electronic arrangements for the d5 configuration.
| ⥮ | ⥮ | 1 | ||
| (a) | ||||
| 1 | 1 | 1 | ⥮ | |
| (b) | ||||
| 1 | 1 | 1 | 1 | 1 |
| (c) | ||||
- which of these represents the ground state.
- which configuration has the maximum exchange energy.
what are the n and l values for 3px and `"4d"_("x"^2 - "y"^2)` electron?
For each of the following, give the sub level designation, the allowable m values and the number of orbitals
- n = 4, l = 2
- n = 5, l = 3
- n = 7, l = 0
Describe the Aufbau principle.
Calculate the energy required for the process.
\[\ce{He^+_{(g)} -> He^2+_{(g)} + e^-}\]
The ionisation energy for the H atom in its ground state is −13.6 ev atom−1.
