In the carbon family,which of the following statements is true as the atomic number increases?

  • A
    Their metallic character decreases.
  • B
    The stability of their $+2$ oxidation state increases.
  • C
    Their ionization energy increases.
  • D
    Their atomic size decreases.

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Which of the following statements is correct with respect to the properties of elements in the carbon family as the atomic number increases?

Assertion : $SiF_6^{2-}$ is known but $SiCl_6^{2-}$ is not.
Reason : Size of fluorine is small and its lone pair of electrons interacts with $d-$orbitals of $Si$ strongly.

Which of the following halides cannot be hydrolysed?

The least stable hydride is:

In the following reaction,assign the correct category for the underlined atom based on the product of complete hydrolysis at $R.T.$:
$\underline{Si}F_4 + 2H_2O \longrightarrow H_4SiO_4 + 4HF$

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