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a) Find the electronic configuration of Mo. b) For transition elements, why does the ionization enthalpy tend to increase along the series only slightly as compared to the main group elements?
a) electronic configuration of Mo1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d5 5s1b) The ionization energy increases due to the increase in the nuclear charge with an atomic number at the beginning of the series. Gradually, the shielding effect of the added electrons...
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why d-block elements elements are called as outer transition elements and f-block elements as inner transition elements?
The d-block elements are called transition metals and have valence electrons in d orbitals. The inner transition elements are those who have their last 3 shells incompletely filled. The f...
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List all the metals of the first series of transition metals in order of increasing atomic number How does the atomic radius of the elements vary across the series ? Explain
(a) List of the first series of transition metals in increasing atomic number;Sc - 21Ti-22V-23Cr-24Mn-25Fe-26Co -27Ni-28Cu-29Zn -30(b) How atomic radius varies across the series.Atomic radius decreases from Sc to ZnThis...
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a) Find the electronic configuration of Mo. (2) b) For transition elements, why does the ionization enthalpy tend to increase along the series only slightly as compared to the main group elements?
A) Atomic Structure of Molybdenum1s2 2s2p6 3s2p6d10 4s2p6d5 5s.B) The ionization energy increases due to the increase in the nuclear charge with an atomic number at the beginning of the series. Gradually, the shielding effect of the added electrons also increases....
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Explain the following terms:
i) Integral enthalpy of solution
ii) Differential enthalpy of solution
iii) Enthalpy of dilution
I. Integral Enthalpy Of Solution is the heat absorbed or released when a solute is dissolved in a definite amount of solvent. The heat of solution depends on the nature...
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Assuming enthalpy of combustion of hydrogen at 273 K, –286 kJ and enthalpy of fusion of ice at the same temperature to be + 6.0 kJ, calculate enthalpy change during formation of 100 g of ice
Answer: H2 + 1/2O2 = H2O(l) ΔH (H2) =-286 kJ/mol ΔH H2O (s) = H2O(l) =6.0 kJ/mol n = m/M M (H2O) = 18 g/mol n (H2O) = 100 / 18...
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Atomic and ionic radii of the elements of group 16 are smaller than those of the corresponding elements of group 15 and increases down the group. Why?
The atomic radius of group-16 elements or oxygen family are smaller than that of group-15 elements. This is due to increase in the effective nuclear charge from group-15 elements which...
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Ionization energies tend to increase from left to right on the periodic table. There are two exceptions to the rule in the graph below. Explain them using Quantum Theory
In the model of atom with a single electron (Bohr model) the energies of the electrons depend only on the principal quantum number n.All the electrons on having the same...
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how do the first ionization energies for the group B elements compare to each other? to the group A elements?
The more electrons protect the outer electron shell from the nucleus, the less energy is required to extract the electron from the specified atom. The higher the protective effect, the...
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The first ionization energy of Aluminium is 580 kJ/mol whereas its second ionization energy is 1815 kJ/mol. Explain the differences in the ionization energy
The ionization energy refers to the energy required to remove an electron from an ion or a gaseous atom. The first ionization energy refers to the energy utilized in removing...
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