Structure of Atom questions
799 published questions with worked solutions.
- If x is the number of electrons and y is the number of nucleons present in ^ 32 _ 16 S^ 2- , then which one of the following is...
- For He ^+, a transition takes place from the orbit of radius 105.8 pm to the orbit of radius 26.45 pm. The wavelength (in nm) of...
- Among the following, the correct statement(s) for electrons in an atom is(are)
- According to Bohr's model, the highest kinetic energy is associated with the electron in the
- The correct decreasing order of energy for the orbitals having, following set of quantum numbers: (A) n = 3, = 0, m = 0 (B) n =...
- Given below are two statements. One is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Energy of 2s...
- Consider the following set of quantum numbers. (A) n = 3, l = 3, m_l = −3 (B) n = 3, l = 2, m_l = −2 (C) n = 2, l = 1, m_l = +1...
- If the uncertainty in velocity and position of a minute particle in space are, 2.4 10^ -26 (m s^ -1 ) and 10^ -7 (m)...
- Identify the incorrect statement from the following. (A) A circular path around the nucleus in which an electron moves is...
- Consider the following statements : (A) The principal quantum number 'n' is a positive integer with values of 'n' = 1, 2, 3, …....
- Hydrogen has three isotopes: protium (^ 1 H), deuterium (^ 2 H or D) and tritium (^ 3 H or T). They have nearly same chemical...
- Given below are the quantum numbers for 4 electrons. A. n = 3, = 2, m _ = 1, m_s = +1/2 B. n = 4, = 1, m _ = 0, m_s = +1/2 C. n =...
- The minimum uncertainty in the speed of an electron in an one dimensional region of length 2a_ 0 (Where a_ 0 = Bohr radius 52.9...
- Which of the following statements are correct ? (A) The electronic configuration of Cr is [Ar] 3d^ 5 4s^ 1 . (B) The magnetic...
- The wavelength of an electron of kinetic energy 4.50 10^ -29 J is ________ 10^ -5 m. (Nearest integer) Given: mass of electron is...
- The number of atomic orbitals from the following having 5 radial nodes is _______. 7s, 7p, 6s, 8p, 8d
- The number of following statement/s which is/are incorrect is _______ (A) Line emission spectra are used to study the electronic...
- The orbital angular momentum of an electron in 3s orbital is xh 2 . The value of x is _________(nearest integer)
- The energy of an electron in the first Bohr orbit of hydrogen atom is -2.18 10^ -18 J. Its energy in the third Bohr orbit is...
- Given below are two statements Statement I : According to Bohr's model of hydrogen atom, the angular momentum of an electron in a...
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