Advertisements
Advertisements
प्रश्न
In which of the following pairs, the ions are iso-electronic?
(i) \[\ce{Na^{+}, Mg^{2+}}\]
(ii) \[\ce{Al3^{+}, O-}\]
(iii) \[\ce{Na+ , O2-}\]
(iv) \[\ce{N3-, Cl-}\]
उत्तर
(i) \[\ce{Na^{+}, Mg^{2+}}\]
(iii) \[\ce{Na+ , O2-}\]
Explanation:
Isoelectronic species are those species that possess the same number of electrons.
Here both \[\ce{Na+, Mg^{2+}}\] possess 10 electrons and both \[\ce{Na+ , O2-}\] possess 10 electrons.
APPEARS IN
संबंधित प्रश्न
Write electronic configurations of \[\ce{Fe, Fe2+, Fe3+}\].
Write condensed orbital notation of electronic configuration of the following element:
Lithium (Z = 3)
Draw shapes of 2p orbitals.
Write a note on ‘Principal Quantum number.
Indicate the number of unpaired electron in:
Cr (Z = 24)
Which of the following properties of atom could be explained correctly by Thomson Model of atom?
Which of the following statements concerning the quantum numbers are correct?
(i) Angular quantum number determines the three dimensional shape of the orbital.
(ii) The principal quantum number determines the orientation and energy of the orbital.
(iii) Magnetic quantum number determines the size of the orbital.
(iv) Spin quantum number of an electron determines the orientation of the spin of electron relative to the chosen axis.
The arrangement of orbitals on the basis of energy is based upon their (n + l) value. Lower the value of (n + l), lower is the energy. For orbitals having same values of (n + l), the orbital with lower value of n will have lower energy.
Based upon the above information, arrange the following orbitals in the increasing order of energy.
1s, 2s, 3s, 2p
Match the following
| (i) Photon | (a) Value is 4 for N shell |
| (ii) Electron | (b) Probability density |
| (iii) ψ2 | (c) Always positive value |
| (iv) Principal quantum number n | (d) Exhibits both momentum and wavelength |
Which of the following element do not follow Aufbau principle?
