Chemistry-
General
Easy
Question
The probability density plots of 1s and 2s orbitals are given in figure
The density of dots in region represents the probability density of finding electrons in the region. On the basis of above diagram which of the following statements is incor-rect?
- 1s and 2s orbitals are spherical in shape
- The probability of finding the electron is maximum near the nucleus
- The probability of finding the electron at a given distance is equal in all directions
- The probability density of electrons for 2s orbitals decreases uniformly as distance from the nucleus increases
The correct answer is: The probability density of electrons for 2s orbitals decreases uniformly as distance from the nucleus increases
Related Questions to study
Physics-
In the set up shown in Fig the two slits, and are not equidistant from the slit S. The central fringe at O is then
In the set up shown in Fig the two slits, and are not equidistant from the slit S. The central fringe at O is then
Physics-General
Physics-
In a Young’s double slit experimental arrangement shown here, if a mica sheet of thickness t and refractive index is placed in front of the slit then the path difference
In a Young’s double slit experimental arrangement shown here, if a mica sheet of thickness t and refractive index is placed in front of the slit then the path difference
Physics-General
Physics-
Following figure shows sources and that emits light of wavelength in all directions. The sources are exactly in phase and are separated by a distance equal to If we start at the indicated start point and travel along path 1 and 2, the interference produce a maxima all along
Following figure shows sources and that emits light of wavelength in all directions. The sources are exactly in phase and are separated by a distance equal to If we start at the indicated start point and travel along path 1 and 2, the interference produce a maxima all along
Physics-General
Physics-
Two coherent sources separated by distance d are radiating in phase having wavelength . A detector moves in a big circle around the two sources in the plane of the two sources. The angular position of n = 4 interference maxima is given as
Two coherent sources separated by distance d are radiating in phase having wavelength . A detector moves in a big circle around the two sources in the plane of the two sources. The angular position of n = 4 interference maxima is given as
Physics-General
Physics-
A beam with wavelength falls on a stack of partially reflecting planes with separation d. The angle that the beam should make with the planes so that the beams reflected from successive planes may interfere constructively is (where n =1, 2, ……)
A beam with wavelength falls on a stack of partially reflecting planes with separation d. The angle that the beam should make with the planes so that the beams reflected from successive planes may interfere constructively is (where n =1, 2, ……)
Physics-General
Physics-
Two point sources X and Y emit waves of same frequency and speed but Y lags in phase behind X by 2l radian. If there is a maximum in direction D the distance XO using n as an integer is given by
Two point sources X and Y emit waves of same frequency and speed but Y lags in phase behind X by 2l radian. If there is a maximum in direction D the distance XO using n as an integer is given by
Physics-General
Physics-
Two ideal slits S1 and S2 are at a distance d apart, and illuminated by light of wavelength passing through an ideal source slit S placed on the line through S2 as shown. The distance between the planes of slits and the source slit is D. A screen is held at a distance D from the plane of the slits. The minimum value of d for which there is darkness at O is
Two ideal slits S1 and S2 are at a distance d apart, and illuminated by light of wavelength passing through an ideal source slit S placed on the line through S2 as shown. The distance between the planes of slits and the source slit is D. A screen is held at a distance D from the plane of the slits. The minimum value of d for which there is darkness at O is
Physics-General
Physics-
A monochromatic beam of light falls on YDSE apparatus at some angle (say ) as shown in figure. A thin sheet of glass is inserted in front of the lower slit S2. The central bright fringe (path difference = 0) will be obtained
A monochromatic beam of light falls on YDSE apparatus at some angle (say ) as shown in figure. A thin sheet of glass is inserted in front of the lower slit S2. The central bright fringe (path difference = 0) will be obtained
Physics-General
Chemistry-
Given The number of electrons present in l = 2 is
Given The number of electrons present in l = 2 is
Chemistry-General
Maths-
Plot A(3,-5) on a carteaion plane.
Plot A(3,-5) on a carteaion plane.
Maths-General
Maths-
If is a non-zero number and , then f(x) is:
If is a non-zero number and , then f(x) is:
Maths-General
Maths-
The integral equal
The integral equal
Maths-General
Maths-
If logf(x) then
If logf(x) then
Maths-General
Maths-
An incomplete frequency distribution is given below Median value is 46, the missing frequency is
An incomplete frequency distribution is given below Median value is 46, the missing frequency is
Maths-General
Physics-
In the adjacent diagram, CP represents a wave front and AO & BP, the corresponding two rays. Find the condition on q for constructive interference at P between the ray BP and reflected ray OP
In the adjacent diagram, CP represents a wave front and AO & BP, the corresponding two rays. Find the condition on q for constructive interference at P between the ray BP and reflected ray OP
Physics-General