Chemistry questions
29404 published questions with worked solutions.
- A Mo atom in its ground state has 4d^5, 5s^1 configuration and a Ag atom has 4d^ 10 , 5s^1 configuration. This is because a shell...
- The radius of which of the following orbit is same as that of the first Bohr's orbit of hydrogen atom?
- For a particular value of azimuthal quantum number, the total number of magnetic quantum number values are given by
- Among the following sets of quantum numbers, which one is incorrect for 4d-electron?
- Which of the following arrangement of orbitals is in the increasing order of energy?
- What is the lowest value of n that allows g orbitals to exist?
- The number of spherical nodes in 3p orbital is
- Which of the following sets of quantum numbers are not possible? I. n=0, l=0, m_l=0, m_s=+ 1 2 II. n=1, l=0, m_l=0, m_s=- 1 2...
- Total number of orbitals associated with third shell will be
- Number of angular nodes for 4d orbital is
- Which of the following transitions are not allowed in the normal electronic emission spectrum of an atom?
- An emission transition starts from the orbit having radius 1.3225 nm and ends 211.6 pm. Name the series to which this transition...
- Which of the following electron transition in hydrogen atom will require largest amount of energy?
- Consider the following statements : 1. Electron density in xy plane in 3d_ x^2-y^2 orbital is zero. 2. Electron density in xy...
- For the electrons of oxygen atom, which of the following statements is correct?
- The pair of ions having same electronic configuration is
- Find the electronic configuration of the O^ 2- ion
- In vapourisation of liquids into air, liquid dissolves into air, hence liquid is
- A solution contains 25% H_2O, 25 % C_2H_5OH and 50 % CH_3COOH by mass. The mole fraction of H_2O would be
- Volume of water needed to mix with 10 ml of 10 N HNO_3 to get 0.1 N HNO_3