Advertisements
Advertisements
प्रश्न
Which one among the following metals of the 3d series has the lowest melting point?
विकल्प
Fe
Mn
Zn
Cu
Advertisements
उत्तर
Zn
Explanation:
Metallic bonds in zinc are weak due to the absence of unpaired electrons. As a result, zinc has the lowest melting point.
APPEARS IN
संबंधित प्रश्न
What may be the stable oxidation state of the transition element with the following d electron configuration in the ground state of its atom?
3d3
Why does the density of transition elements increase from Titanium to Copper? (at. no. Ti = 22, Cu = 29)
Assertion: \[\ce{Cu^2+}\] iodide is not known.
Reason: \[\ce{Cu^2+}\] oxidises \[\ce{I^-}\] to iodine.
When an oxide of manganese (A) is fused with KOH in the presence of an oxidising agent and dissolved in water, it gives a dark green solution of compound (B). Compound (B) disproportionates in neutral or acidic solution to give purple compound (C). An alkaline solution of compound (C) oxidises potassium iodide solution to a compound (D) and compound (A) is also formed. Identify compounds A to D and also explain the reactions involved.
Why are fluorides of transition metals more stable in their higher oxidation state as compared to the lower oxidation state?
The element with atomic number 53 belongs to
The spin magnetic moment of cobalt in the compound Hg [Co(SCN)4] is:-
The electrode potential of M2+/M of 3d-series elements shows the positive value for ______.
Account for the following:
Zirconium (Zr) and Hafnium (Hf) are difficult to separate.
Compare the general characteristics of the first series of the transition metals with those of the second and third series metals in the respective vertical columns. Give special emphasis on the following point:
Atomic sizes
