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प्रश्न
What is the action of Magnesium on bismuth.
उत्तर
\[\ce{2 Bi + 3 Mg -> Mg3 Bi2}\]
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संबंधित प्रश्न
Give reasons for the following : (CH3)3 P = O exists but (CH3)3 N = O does not.
Why are pentahalides more covalent than trihalides?
Why is BiH3 the strongest reducing agent amongst all the hydrides of Group 15 elements?
Write main differences between the properties of white phosphorus and red phosphorus.
Why does nitrogen show catenation properties less than phosphorus?
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)
Among the hydrides of Group-15 elements, which have the maximum reducing character?
Give reasons H3PO3 undergoes disproportionation reaction but H3PO4 does not.
Give reasons When Cl2 reacts with the excess of F2, ClF3 is formed and not FCl3.
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.
Give a reason for the following:
E° value for (Mn2+|Mn) is negative whereas for (Cu2+|Cu) is positive.
Give reasons for the following:
E⁰ value for (Mn3+|Mn2+) is highly positive than that for (Cr3+|Cr2+) couple.
Elements having +5 oxidation state is ____________.
Ionic radii (in Å) of As3+, Sb3+ and Bi3+ follow the order:
Which one of the following elements is most metallic?
Which of the following statements is true?
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 statements are correct for \[\ce{SO2}\] gas?
(i) It acts as bleaching agent in moist conditions.
(ii) It’s molecule has linear geometry.
(iii) It’s dilute solution is used as disinfectant.
(iv) It can be prepared by the reaction of dilute \[\ce{H2SO4}\] with metal sulphide.
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 |
Account for the following:
Zinc is a comparatively a soft metal, iron and chromium are typically hard.
Hess's law is used to calculate:
The decreasing order of the boiling points of the following hydrides is ______.
Which acid of the following pair would you expect to be stronger?
F−CH2−COOH or CH3−COOH
A ·group 15 element, which is a metal and forms a hydride with strongest reducing power among group 15 hydrides. The element is ______.
