Advertisements
Advertisements
Question
What is the action of sodium on arsenic.
Solution
\[\ce{3 NA + AS -> Na3AS}\]
APPEARS IN
RELATED QUESTIONS
The element that does NOT exhibit allotropy is
- As
- Sb
- Bi
- N
Arrange the following in the increasing order of property mentioned :
H3PO3, H3PO4, H3PO2 (Reducing character)
Give reasons for the following : (CH3)3 P = O exists but (CH3)3 N = O does not.
Discuss the trends in chemical reactivity of group 15 elements.
Why does R3P=O exist but R3N=O does not (R = alkyl group)?
Write main differences between the properties of white phosphorus and red phosphorus.
Account for the following :
Reducing character decreases from SO2 to TeO2
Account for the following :
BiH3 is the strongest reducing agent amongst all the hydrides of group 15.
Account for the following :
N − N single bond is weaker than P − P single bond.
Explain the geometry of [Cu(NH3)4]2+ on the basis of hybridisation [ At. No. Cu = 29 ].
Maximum covalency of nitrogen is ______.
The strongest oxidising agent is ____________.
With respect to protonic acids, which of the following statement is correct?
Which of the following is the strongest reducing agent?
The correct order of increasing oxidising power is:
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 options are not in accordance with the property mentioned against them?
(i) | \[\ce{F2 > Cl2 > Br2 > I2}\] | Oxidising power. |
(ii) | \[\ce{MI > MBr > MC1 > MF}\] | Ionic character of metal halide. |
(iii) | \[\ce{F2 > Cl2 > Br2 > I2}\] | Bond dissociation enthalpy. |
(iv) | \[\ce{HI < HBr < HCI < HF}\] | Hydrogen-halogen bond strength. |
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. |
Hess's law is used to calculate:
Which of the following pairs will have same chemical properties?
An electron can enter into the orbital when
The elements which are characterized by the outer electronic configuration ns1 to ns2 np6 are collectively called
The elements with zero electron affinity are
Basicity of ortho phosphoric acid is:-
The basic strengths of the hydrides group is elements decrease in the order.