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Which of the following is not permissible arrangement of electrons in an atom?
Maximum number of electrons in a subshell with l = 3 and n = 4 is:
The electronic configurations of Eu (Atomic no. 63), Gd (Atomic no. 64) and Tb (Atomic no. 65) are:
The measurement of the electron position is associated with an uncertainty in momentum which is equal to $1 \times 10^{-18} \text{ g cm s}^{-1}$. The uncertainty in velocity of the electron will be: (mass of an electron is $9 \times 10^{-28} \text{ g}$)
The relation between $n_m$ ($n_m$ = number of permissible values of magnetic quantum number, $m_l$) for a given value of azimuthal quantum number ($l$) is:
Which one of the following ions has electronic configuration [Ar]3d⁶? (At. no: Mn = 25, Fe = 26, Co = 27, Ni = 28)
A $0.66 \text{ kg}$ ball is moving with a speed of $100 \text{ m/s}$. The associated wavelength will be: ($h = 6.6 \times 10^{-34} \text{ Js}$)
The correct set of four quantum numbers for the valence electron of rubidium atom (Z = 37) is:
A particular station of All India Radio, New Delhi, broadcasts on a frequency of $1,368 \text{ kHz}$ (kilohertz). The wavelength of the electromagnetic radiation emitted by the transmitter is: [speed of light, $c = 3.0 \times 10^8 \text{ m s}^{-1}$]
Incorrect set of quantum numbers from the following is:
How many electrons can fit in the subshell for which n = 3 and l = 1?
Which one of the following ions is the most stable in aqueous solution? (At no. Ti=22, V=23, Cr=24, Mn=25)
If the rate of the reaction is equal to the rate constant, the order of the reaction is:
A deficiency in which of the following vitamins leads to a decrease in red blood cell (RBC) production?
What is the maximum number of orbitals that can be identified with the following quantum numbers? n = 3, l = 1, m = 0
The energies E₁ and E₂ of two radiations are 25 eV and 50 eV respectively. The relation between their wavelengths i.e., λ₁ and λ₂ will be:
Given below are two statements: Statement I: The value of wave function, Ψ depends upon the coordinates of the electron in the atom. Statement II: The probability of finding an electron at a point within an atom is proportional to the orbital wave function. In light of the above statements, choose the correct answer from the options given below:
D-(+)-glucose reacts with hydroxylamine and yields an oxime. The structure of the oxime would be:
Match List-I with List-II: | List-I (IUPAC official name) | List-II (IUPAC Symbol) | | :--- | :--- | | A. Mendelevium | I. Mt | | B. Meitnerium | II. Mc | | C. Moscovium | III. No | | D. Nobelium | IV. Md |
The reaction: $CH_3-CH(CH_3)-CH_2-O-CH_2-CH_3 + HI \xrightarrow{\text{heated}} ?$ Which of the following compounds will be formed?