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प्रश्न
The trend of which property is represented by the following graph?
विकल्प
ionization enthalpy
atomic radii
enthalpy of atomization
melting point
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उत्तर
Atomic radii
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संबंधित प्रश्न
Out of Mn3+ and Cr3+, which is more paramagnetic and why ?
(Atomic nos. : Mn = 25, Cr = 24)
Write down the number of 3d electrons in the following ion:
Cu2+
Indicate how would you expect the five 3d orbitals to be occupied for this hydrated ions (octahedral).
Why does the density of transition elements increase from Titanium to Copper? (at. no. Ti = 22, Cu = 29)
Metallic radii of some transition elements are given below. Which of these elements will have highest density?
| Element | \[\ce{Fe}\] | \[\ce{Co}\] | \[\ce{Ni}\] | \[\ce{Cu}\] |
| Metallic radii/pm | 126 | 125 | 125 | 128 |
EΘ of Cu is + 0.34V while that of Zn is – 0.76V. Explain.
Reactivity of transition elements decreases almost regularly from Sc to Cu. Explain.
It has been observed that first ionization energy of 5 d series of transition elements are higher than that of 3d and 4d series, explain why?
On the basis of the figure given below, answer the following questions:
- Why Manganese has lower melting point than Chromium?
- Why do transition metals of 3d series have lower melting points as compared to 4d series?
- In the third transition series, identify and name the metal with the highest melting point.
Catalytic hydrogenation of benzene gives
The basic character of transition metals monoxide follow the order.
