Advertisements
Advertisements
प्रश्न
Account for the following
The enthalpy of atomisation is lowest for Zn in 3d series of the transition elements.
Account for the following:
In the 3d transition series, zinc has the lowest enthalpy of atomisation.
उत्तर
The extent of metallic bonding an element undergoes decides the enthalpy of atomisation. The more extensive the metallic bonding of an element, the more will be its enthalpy of atomisation. In all transition metals (except Zn, electronic configuration: 3d10 4s2), there are some unpaired electrons that account for their stronger metallic bonding. Due to the absence of these unpaired electrons, the inter-atomic electronic bonding is the weakest in Zn, and as a result, it has the least enthalpy of atomisation.
APPEARS IN
संबंधित प्रश्न
Considering the parameters such as bond dissociation enthalpy, electron gain enthalpy and hydration enthalpy, compare the oxidising power of F2 and Cl2.
Account for the following :
Reducing character decreases from SO2 to TeO2
Collectively the elements of group 15 are called:
Which of the following group 15 elements forms metallic bonds in an elemental state?
Elements of group-15 form compounds in +5 oxidation state. However, bismuth forms only one well-characterised compound in +5 oxidation state. The compound is ______.
Which of the following element will form acidic oxides of type E2O3?
Which of the following statements is true?
Given below are two statements, one is labelled as Assertion (A) and the other is labelled as Reason (R):
Assertion: Smaller the size of an atom greater is the electronegativity.
Reason: Electronegativity refers to the tendency of atom to share electrons with other atom.
In a regular octahedral molecule mx6, the number of X – M – X bouds at 180° are:-
When a colourless gas is passed through bromine water it decolorise, The gas is:-
