Which of the following statements is incorrect?

  • A
    $Sr$ decomposes water more readily than $Be$.
  • B
    $BaCO_3$ melts at a higher temperature than $CaCO_3$.
  • C
    $Be(OH)_2$ is more basic than $Mg(OH)_2$.
  • D
    $Be(OH)_2$ is more amphoteric than $Ba(OH)_2$.

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$Be$ and $Al$ exhibit many properties which are similar,but the two elements differ in:

Which of the following properties of the alkaline earth metals increase from $Be$ to $Ba$?
$(i)$ Atomic radius
$(ii)$ Ionisation energy
$(iii)$ Nuclear charge

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Why do beryllium and magnesium not impart colour to the flame in the flame test?

Chemical $A$ is used for the removal of temporary hardness of water. Compound $A$ reacts with $Na_2CO_3$ to produce caustic soda. When $CO_2$ gas is passed through $A$,it turns milky. What is the chemical formula of $A$?

Which of the following is the characteristic outer shell electronic configuration of alkaline earth metals?

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