Which of the following statements is correct with respect to the properties of elements in the carbon family as the atomic number increases?
- AAtomic size decreases
- BIonization energy increases
- CMetallic character decreases
- DStability of $+2$ oxidation state increases
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Identify the correct statements from the following.
$i$. Melting points and boiling points of group $13$ elements are much higher than those of corresponding group $14$ elements.
$ii$. $SiO$ only exists at high temperatures.
$iii$. $PbI_4$ does not exist.
$iv$. Buckminster fullerene contains twelve $6$-membered carbon rings and twenty $5$-membered carbon rings.
$i$. Melting points and boiling points of group $13$ elements are much higher than those of corresponding group $14$ elements.
$ii$. $SiO$ only exists at high temperatures.
$iii$. $PbI_4$ does not exist.
$iv$. Buckminster fullerene contains twelve $6$-membered carbon rings and twenty $5$-membered carbon rings.
Which of the following forms cyclic silicones on hydrolysis?
Medium
View SolutionThe amorphous form of silica is
DifficultJEE MAIN 2019
View SolutionAssertion $(A): [SiF_6]^{2-}$ is formed but $[SiCl_6]^{2-}$ is not.
Reason $(R):$ Electronegativity $(EN)$ of $F$ is higher than $EN$ of $Cl$.
Reason $(R):$ Electronegativity $(EN)$ of $F$ is higher than $EN$ of $Cl$.
Which of the following is a three dimensional silicate?
Easy
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