Advertisements
Advertisements
प्रश्न
What are alloys?
Advertisements
उत्तर
An alloy is a blend of metals prepared by mixing the components. Alloys may be homogeneous solid solutions in which the atoms of one metal are distributed randomly among the atoms of the other.
संबंधित प्रश्न
Account for the following:
E° value for the Mn3+/Mn2+ couple is much more positive than that for Cr3+/Cr2+.
What are the characteristics of the transition elements and why are they called transition elements?
Predict which of the following will be coloured in the aqueous solution?
Ti3+, V3+, Cu+, Sc3+, Mn2+, Fe3+ and Co2+. Give reasons for each.
How would you account for the following?
Transition metals and their compounds act as catalysts.
Write balanced chemical equations for the conversion of `CrO_4^(2-)` to `Cr_2O_7^(2-)` in acidic medium and `Cr_2O_7^(2-)` to `CrO_4^(2-)`
in basic medium.
Why do transition elements show variable oxidation states ? In 3d series (Sc to Zn), which elements shows the maximum number of oxidation state and why ?
Explain why Mn2+ is more stable than Fe2+ towards oxidation to +3 state. (At. no. of Mn = 25, Fe = 26)
Which among the following transition metal has the lowest melting point?
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 statements is not correct?
Why EΘ values for Mn, Ni and Zn are more negative than expected?
Why first ionisation enthalpy of Cr is lower than that of Zn?
Ionisation enthalpies of Ce, Pr and Nd are higher than Th, Pa and U. Why?
Answer the following question:
Which element of the first transition series has highest second ionisation enthalpy?
Answer the following question:
Which element of the first transition series has highest third ionisation enthalpy?
The element with atomic number 53 belongs to
The basic character of transition metals monoxide follow the order.
The oxidation state of Fe in [Fe(CO)5] is ______.
A transition element X has an electronic configuration [Ar]4s23d3. Predict its likely oxidation states.
Account for the following:
Copper has an exceptionally positive `"E"_("M"^(2+)//"M")^0` value.
