Which of the following is the better method for the preparation of $BeF_2$?
- A$(NH_4)_2BeF_4 \xrightarrow{\Delta} BeF_2 + 2NH_4F$
- B$BeH_2 + F_2 \xrightarrow{\Delta} BeF_2 + H_2$
- C$Be + F_2 \xrightarrow{\Delta} BeF_2$
- D$BeO + C + F_2 \xrightarrow{\Delta} BeF_2 + CO$
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Similar Questions
Fill in the blanks:
$(1)$ Calcium oxide is commonly known as .......
$(2)$ $A$ suspension of calcium hydroxide in water is known as ....
$(3)$ The common name of calcium hydroxide is .......
$(4)$ The general name of calcium sulphate hemihydrate is ......
$(1)$ Calcium oxide is commonly known as .......
$(2)$ $A$ suspension of calcium hydroxide in water is known as ....
$(3)$ The common name of calcium hydroxide is .......
$(4)$ The general name of calcium sulphate hemihydrate is ......
Difficult
View SolutionObserve the following reactions:
$Dimer \longleftarrow \text{Vapour phase } MCl_2 \xrightarrow{1200 \ K} \text{linear monomer}$.
What is $M$?
$Dimer \longleftarrow \text{Vapour phase } MCl_2 \xrightarrow{1200 \ K} \text{linear monomer}$.
What is $M$?
Why does the solubility of alkaline earth metal carbonates and sulphates decrease down the group?
Easy
View SolutionDiscuss the trend of the following:
$(i)$ Thermal stability of carbonates of Group $-2$ elements.
$(ii)$ The solubility and the nature of oxides of Group $-2$ elements.
$(i)$ Thermal stability of carbonates of Group $-2$ elements.
$(ii)$ The solubility and the nature of oxides of Group $-2$ elements.
Medium
View SolutionAssertion : The ionic radii of the alkaline earth metals are smaller than those of alkali metals in the same period.
Reason : Alkali metals have higher nuclear charge than that of the alkaline earth metals.
Reason : Alkali metals have higher nuclear charge than that of the alkaline earth metals.
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