Question:

Select correct statement(s).

Updated On: Aug 15, 2022
  • Cyanamide ion $ (CN_2^{2-})$ $ is electronic with $ CO_2$, and has the same linear structure
  • $ Mg_2C_3 $ reacts with water to form propyne
  • $CaC_2 $ has $NaCl $ type lattice
  • All of the above
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The Correct Option is D

Solution and Explanation

Thus, $CN _{2}^{2-}$ and $CO _{2}$ both are isoelectronic and isostructural. (b) $Mg _{2} C _{3}+ H _{2} O \longrightarrow \underset{\text{propyne}}{CH _{3}- C \equiv CH} + Mg ( OH )_{2}$ (c) $Ca ^{2+} C _{2}^{2-}$ has $NaCl$ type latice.
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Concepts Used:

P-Block Elements

  • P block elements are those in which the last electron enters any of the three p-orbitals of their respective shells. Since a p-subshell has three degenerate p-orbitals each of which can accommodate two electrons, therefore in all there are six groups of p-block elements.
  • P block elements are shiny and usually a good conductor of electricity and heat as they have a tendency to lose an electron. You will find some amazing properties of elements in a P-block element like gallium. It’s a metal that can melt in the palm of your hand. Silicon is also one of the most important metalloids of the p-block group as it is an important component of glass.

P block elements consist of: