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प्रश्न
Name the following.
The most abundant element in the universe.
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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.
BeCl2 is covalent while MgCl2 is ionic.
Write a balanced chemical equation for the following.
Magnesium is heated in air.
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.
Name the following.
Radioactive alkali metal.
Name the following.
Ions having high concentration in cell sap.
Which of the following alkaline earth metals has the least affinity towards oxygen?
The first ionization enthalpies of alkali metals decreases down the group because of
Which of the following statements is INCORRECT?
Which of the following is CORRECT for the atomic and ionic radii of alkali metals?
Alkaline hydrolysis of which among the following compounds leads to the formation of a racemate?
Identify the metals having electronic configuration of [Ar]4s2 and [Kr]5s2 respectively.
In the following reaction, metal 'M' CANNOT be ____________.
\[\ce{M + O2 ->[\Delta] MO2}\]
Which among the following chlorides of alkali metal is deliquescent?
Which among the following alkali metal chlorides form hydrate?
KO2 (potassium superoxide) is used in oxygen cylinders in space and submarines because it ______.
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 ______.
Which of the following is likely to undergo racemisation during alkaline hydrolysis?
