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प्रश्न
What is the action of sodium on arsenic.
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उत्तर
\[\ce{3 NA + AS -> Na3AS}\]
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संबंधित प्रश्न
Write four points of differences between properties of nitrogen and other elements of group 15.
Explain how does nitrogen exhibit anomalous behaviour amongst group 15 elements.
Why are pentahalides more covalent than trihalides?
Discuss the general characteristics of Group 15 elements with reference to their electronic configuration.
Write main differences between the properties of white phosphorus and red phosphorus.
The oxidation state of nitrogen in dinitrogen trioxide is ____
(a) + 1
(b) + 2
(c) + 3
(d) + 4
Give reasons When Cl2 reacts with the excess of F2, ClF3 is formed and not FCl3.
Account for the following
The enthalpy of atomisation is lowest for Zn in 3d series of the transition elements.
Elements having +5 oxidation state is ____________.
Which one of the following elements is most metallic?
Which of the following species has the highest dipole moment?
Which of the following trihalide is unstable?
Among the following, which one is a wrong statement.
The correct order of oxidising power is:
Which of the following has highest ionisation enthalpy?
Which of the following statements is true?
The oxidation state of central atom in the anion of compound \[\ce{NaH2PO2}\] will be ______.
Match the items of Columns I and II and mark the correct option.
| Column I | Column II | |
| (A) | Its partial hydrolysis does not | (1) He |
| (B) | It is used in modern diving apparatus | (2) XeF6 |
| (C) | It is used to provide inert atmosphere for filling electrical bulbs |
(3) XeF4 |
| (D) | Its central atom is in sp3d2 hybridisation | (4) Ar |
Assertion: N2 is less reactive than P4.
Reason: Nitrogen has more electron gain enthalpy than phosphorus.
In \[\ce{PCl5}\], phosphorus is in sp3d hybridised state but all its five bonds are not equivalent. Justify your answer with reason.
Account for the following:
Zinc is a comparatively a soft metal, iron and chromium are typically hard.
Which of the following pairs will have same chemical properties?
Among the following, identify the species with an atom in +6 oxidation state.
Basicity of ortho phosphoric acid is:-
In a regular octahedral molecule mx6, the number of X – M – X bouds at 180° are:-
In NH3 and PH3 the common is:-
Which acid of the following pair would you expect to be stronger?
F−CH2−COOH or CH3−COOH
