Advertisements
Advertisements
प्रश्न
The group 15 element having inner electronic configuration as of argon is-
(a) Phosphorous (z = 15)
(b) Antimony (z =51)
(c) Arsenic (z = 33)
(d) Nitrogen (z = 7)
Advertisements
उत्तर
Arsenic (Z = 33)
APPEARS IN
संबंधित प्रश्न
The element that does NOT exhibit allotropy is
- As
- Sb
- Bi
- N
Nitrogen does not form pentahalide.
Why are pentahalides more covalent than trihalides?
Nitrogen exists as diatomic molecule and phosphorus as P4. Why?
Among the hydrides of Group-15 elements, which have the highest bond angle?
Give reasons When Cl2 reacts with the excess of F2, ClF3 is formed and not FCl3.
Account for the following :
BiH3 is the strongest reducing agent amongst all the hydrides of group 15.
Account for the following
Bi(V) is a stronger oxidizing agent than Sb(V).
Account for the following :
Noble gases have very low boiling points.
Account for the following :
Sulphur in vapour form exhibits paramagnetic behaviour.
What is the action of sodium on arsenic.
Explain the geometry of [Cu(NH3)4]2+ on the basis of hybridisation [ At. No. Cu = 29 ].
Account for the following :
Acidic character decreases from N2O3 to Bi2O3 in group 15.
Maximum covalency of nitrogen is ______.
The element which forms oxides in all oxidation states varying from +1 to +5 is ____________.
With respect to protonic acids, which of the following statement is correct?
H2S is more acidic than H2O because ____________.
Acidity of diprotic acid in aqueous solution increases in order.
If chlorine gas is passed through hot NaOH solution, two changes are observed in the oxidation number of chlorine during the reaction. These are :
(i) 0 to +5
(ii) 0 to +3
(iii) 0 to –1
(iv) 0 to +1
Which of the following orders are correct as per the properties mentioned against each?
| (i) | \[\ce{As2O3 < SiO2 < P2O3 < SO2}\] | Acid strength. |
| (ii) | \[\ce{AsH3 < PH3 < NH3}\] | Enthalpy of vapourisation. |
| (iii) | \[\ce{S < O < Cl < F}\] | More negative electron gain enthalpy. |
| (iv) | \[\ce{H2O > H2S > H2Se > H2Te}\] | Thermal stability. |
In \[\ce{PCl5}\], phosphorus is in sp3d hybridised state but all its five bonds are not equivalent. Justify your answer with reason.
Which of the following pairs will have same chemical properties?
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.
The elements with zero electron affinity are
When a colourless gas is passed through bromine water it decolorise, The gas is:-
The correct order of increase acidic strength of CIOH(1), BrOH (II) and lOH (iii) is.
The decreasing order of the boiling points of the following hydrides is ______.
In which one of the following arrangements the given sequence is not strictly according to the properties indicated against it?
