The electronic transitions from n = 2 to n= 1 will produce shortest wavelength in (where n = principal quantum state)
Li2+
He+
H
H+
In the following electron-dot structure, calculate the formal charge from left to right nitrogen atom;
-1, -1, +1
-1, +1, -1
+1, -1, -1
+1, -1, +1
A radioactive atom M emits two a particles and one B particle successively. The number of neutrons in the nucleus of the product will be
X - 4 - Y
X - Y - 5
X - Y - 3
X - Y - 6
For a particular value of azimuthal quantum number, the total number of magnetic quantum number values are given by
l =
l =
l =
m =
What is the wavelength of an α-particle having mass 6.6 × 10-27 kg moving with a speed of 105 cms-1? ( h = 6.6 × 10-34 kgm2 - s)?
2 × 10-12 m
3 × 10-10 m
1 × 10-10 m
2 × 10-10 m
With what velocity should an -particle travel towards the nucleus of a copper atom to arrive at a distance of 10-13m from the nucleus of the copper atom?(K = 9x 109 Nm2/C2 (Mass of -particle = 6.64 x 10-27kg).
634 x 106 ms-1
634 x105 ms-1
5.34 x 106 ms-1
534 x 105 ms-1
What is the ratio of the velocities of CH4 and O2 molecules so that they are associated with de-Broglie waves of equal wavelengths?
1:2
2: 1
3: 2
1: 2
The ratio of slopes of Kmax vs V and V0 vs v curves in the photoelectric effects gives (v = frequency, Kmax = maximum kinetic energy, v0 = stopping potential)
the ratio of Planck's constant of electronic charge
work function
Planck's constant
charge of electron
According to Bohr's theory, the angular momentum for an electron of 3rd orbit is
3h
1.5h
9h
A.
3h