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प्रश्न
Which of the following metals has the largest abundance in the earth’s crust?
विकल्प
Aluminium
Calcium
Magnesium
Sodium
उत्तर
Aluminium
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संबंधित प्रश्न
In diborane, the number of electrons that accounts for banana bonds is ____________.
Duralumin is an alloy of ____________.
The compound that is used in nuclear reactors as protective shields and control rods is ____________.
Describe the structure of diborane.
Write a short note on hydroboration.
Give one example for the following.
Icosogens
Complete the following reaction.
\[\ce{B2H6 + 2NaOH + 2H2O ->}\]
Complete the following reaction.
\[\ce{B + NaOH ->}\]
Complete the following reaction.
\[\ce{H2B4O7 ->[Red hot]}\]
A double salt which contains fourth-period alkali metal (A) on heating at 500 K gives (B). aqueous solution of (B) gives white precipitate with BaCl2 and gives a red colour compound with alizarin. Identify A and B.
