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The p-Block Elements
Give the name of allotrope of carbon which:
(i) is the hardest substance known
(ii) is used by artists in pencils
(iii) has the property of adsorbing gases
(iv) is used for making electrodes
(v) is used for absorbing organic colouring matter.
(vi) is used in the manufacturing of boot polishes.
(i) Diamond
(ii) Graphite
(iii) Charcoal
(iv) Graphite
(v) Animal charcoal
(vi) Lamp black
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Which element of group 13 forms the most stable +1 oxidation state?
What is the nature of boron trifluoride?
What is the structure of diborane?
Can borax bead test be performed for Ca2+ ion?
Which is the hardest compound of boron?
What is inorganic benzene? Write its formula.
Name a hydride of boron which is used as reducing agent in organic chemistry.
Does a molecule of BH3 exist?
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