Advertisements
Advertisements
प्रश्न
Which metal in the first series of transition metals exhibits +1 oxidation state most frequently and why?
Advertisements
उत्तर
- Copper (Cu) in the first series of transition metals most frequently exhibits the +1 oxidation state.
- This occurs because Cu has the electronic configuration [Ar] 3d10 4s1.
- When Cu forms the +1 ion (Cu+), it achieves a completely filled and very stable 3d10 configuration.
- The extra stability of the filled d-subshell makes the +1 oxidation state common for copper compared to other first transition metals.
संबंधित प्रश्न
Why do interstitial compounds have higher melting points than corresponding pure metals?
Explain briefly how +2 state becomes more and more stable in the first half of the first row transition elements with increasing atomic number?
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).
An antifriction alloy made up of antimony with tin and copper, which is extensively used in machine bearings is called _______.
(A) Duralumin
(B) Babbitt metal
(C) Spiegeleisen
(D) Amalgam
Write the formula of an oxo-anion of Chromium (Cr) in which it shows the oxidation state equal to its group number
Complete and balance the following chemical equations
`Fe^(2+) + MnO_4^(-) + H^+ ->`
Complete and balance the following chemical equations
`MnO_4^(-) + H_2O + I^(-) ->`
Which among the following transition metal has the lowest melting point?
Which is the most stable oxidation state of iron?
The magnetic moment is associated with its spin angular momentum and orbital angular momentum. Spin only magnetic moment value of \[\ce{Cr^{3+}}\] ion is ______.
Which of the following ions show higher spin only magnetic moment value?
(i) \[\ce{Ti^3+}\]
(ii) \[\ce{Mn2+}\]
(iii) \[\ce{Fe2+}\]
(iv) \[\ce{Co3+}\]
A solution of \[\ce{KMnO4}\] on reduction yields either a colourless solution or a brown precipitate or a green solution depending on pH of the solution. What different stages of the reduction do these represent and how are they carried out?
Assertion: The highest oxidation state of osmium is +8.
Reason: Osmium is a 5d-block element.
Mention the type of compounds formed when small atoms like H, C and N get trapped inside the crystal lattice of transition metals. Also give physical and chemical characteristics of these compounds.
Account for the following:
In case of transition elements, ions of the same charge in a given series show progressive decrease in radius with increasing atomic number.
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 strong heating AgNO3, the gases evolved are:-
The value of Δ0 for \[\ce{RhCl^{3-}6}\] is 243 KJ/mol which wavelength of light will promote an electron from. The colour of the complex is ______.
Assertion (A): Transition metals have high enthalpy of atomisation.
Reason (R): Greater number of unpaired electrons in transition metals results in weak metallic bonding.
The trend of which property is represented by the following graph?
