Catenation is a process for the formation of
Cations
Ionic compound
Covalent compound
Long chains of identical atoms
Which element — element bond has the highest bond dissociation potential?
C — C
Si — Si
Ge — Ge
Sn — Sn
PbF4 and PbCl4 exist, but PbBr4 and PbI4 do not exist, because of
Large size of Br- and I-
Low electronegativity of Br- and I-
Strong reducing character of Pb4+
Strong oxidising character of Pb4+
The first ionisation potential of Group 13 elements is lower than that of Group 2 elements, because?
Electrons in Group 2 elements are bonded weakly
Electrons in Group 13 elements are bonded tightly
Group 13 elements have 3 electrons in valence shell
Group 13 elements have 5 electrons in valence shell
Which of the following statement is correct with respect to the property of elements with increase in atomic no. in the carbon family?
Their atomic size decreases
Their metallic character decreases
Their ionisation potential increases
Stability of +2 oxidation state increases
Which of the following is true for an element R present in Group 13 of the Periodic Table?
It forms RX2
It forms R2O3
It has oxidation state of +4
It is a gas at room temperature
SiCl4 is easily hydrolysed but CCl4 is not. This is because
Silicon is non-metallic
Bonding in SiCl4 is ionic
Silicon can form hydrogen bond but carbon can not
Silicon can expand its co-ordination number beyond four but carbon can no
