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Two electrons occupying the same orbital are distinguished by:
The magnetic moment of 2.84 BM can be shown by: (At. no. Ni = 28, Ti = 22, Cr = 24, Co = 27)
From the given equation, certain conclusions are drawn: $E = -2.178 \times 10^{-18} \text{ J } \left(\frac{Z^2}{n^2}\right)$. Choose the incorrect statement:
Which one of the elements with the following outer orbital configurations may exhibit the largest number of oxidation states?
The energy absorbed by each molecule (A₂) of a substance is 4.4 × 10⁻¹⁹ J and bond energy per molecule is 4.0 × 10⁻¹⁹ J. The kinetic energy of the molecule per atom will be:
Maximum number of electrons in a subshell of an atom can be determined by which of the following formula:
If uncertainty in position and momentum are both equal, what will the uncertainty in velocity be?
Given the following data: Mass of electron: 9.11 × 10⁻³¹ kg Planck's constant: 6.626 × 10⁻³⁴ Js In light of the data given above, the uncertainty involved in the measurement of velocity within a distance of 0.1 Å will be:
Consider the following sets of quantum numbers (n, l, m, s): (i) 3, 0, 0, +1/2 (ii) 2, 2, 1, +1/2 (iii) 4, 3, -2, -1/2 (iv) 1, 0, -1, -1/2 (v) 3, 2, 3, +1/2 Which of the following sets of quantum numbers is not possible?
The number of d-electrons in Fe²⁺ (atomic number Z = 26) is not equal to the number of:
The orientation of an atomic orbital is governed by:
Weight (g) of two moles of the organic compound, which is obtained by heating sodium ethanoate with sodium hydroxide in the presence of calcium oxide is:
A pair of d-orbitals having electron density along the axes is:
The incorrect statement among the following is:
The orbital angular momentum of an electron in a d-orbital is equal to:
The value of Planck's constant is 6.63 × 10⁻³⁴ Js. The speed of light is 3 × 10¹⁷ nm s⁻¹. Which value is closest to the wavelength in nanometers of a quantum of light with a frequency of 6 × 10¹⁵ s⁻¹?
If the half-life is independent of its initial concentration, then the order of the reaction is:
Experimental verification of the chromosomal theory of inheritance was done by
A particle of mass $4M$ at rest splits into two particles of mass $M$ and $3M$. The ratio of the kinetic energies of mass $M$ and $3M$ would be:
A spring is stretched by 5 cm by a force 10 N. The time period of the oscillations when a mass of 2 kg is suspended by it is