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प्रश्न
Name the following.
The most abundant element in the universe.
उत्तर
The most abundant element in the universe - Hydrogen (H)
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संबंधित प्रश्न
Explain the following.
Standard reduction potential of alkali metals have high negative values.
Explain the following.
Sodium dissolves in liquid ammonia to form a solution which shows electrical conductivity.
Explain the following.
BeCl2 is covalent while MgCl2 is ionic.
Explain the following.
Lithium floats and water while sodium floats and catches fire when put in water.
Write a balanced chemical equation for the following.
\[\ce{CO2}\] is passed into a concentrated solution of NaCl, which is saturated with \[\ce{NH3}\].
Write a balanced chemical equation for the following.
A 50% solution of sulphuric acid is subjected to electrolyte oxidation and the product is hydrolysed.
Write a balanced chemical equation for the following.
Beryllium oxide is treated separately with aqueous HCl and aqueous NaOH solutions.
Answer the following question.
Describe the diagonal relationship between Li and Mg with the help of two illustrative properties.
Name the following.
Alkali metal with smallest atom.
Which of the following is radioactive?
Which of the following statements is INCORRECT?
Which of the following is CORRECT for the atomic and ionic radii of alkali metals?
The oxidation states of O atom in Na2O2 and KO2 are ____________, respectively.
Alkaline hydrolysis of which among the following compounds leads to the formation of a racemate?
Which of the following is INCORRECT for alkali metals?
In the following reaction, metal 'M' CANNOT be ____________.
\[\ce{M + O2 ->[\Delta] MO2}\]
Which among the following is used as a source of oxygen in submarine in emergency breathing apparatus?
Which among the following chlorides of alkali metal is deliquescent?
Which among the following alkali metal chlorides form hydrate?
The element that does not form acidic oxide is ______.
Which among the following elements of group-2 exhibits anomalous properties?
Which among the group-15 elements does not exist as tetra atomic molecule?
Which of the following is most soluble in water?
The element of group 2, which forms an amphoteric oxide and a water soluble sulphate is ______.
