Which of the following statements concerning silicon and its bonding is false? a. Silicon dioxide consists of linear molecules b. Silicon has vacant 3d orbitals in its valence shell that can accept electrons from donor atoms c. Silicon does not form very stable Si–Si bonds unless the silicon atoms are bonded to very electronegative elements d. Silicon forms its strongest single bond with oxygen
1. Which statement regarding sulphuric acid is incorrect?
a. Concentrated sulfuric acid is about 78% H2SO4 by mass and 10 molar
b. It is a strong acid with respect to its first step ionisation
c. Its second step ionization is not complete in concentrated solutions
d. It is often used as a dehydrating agent because of its strong affinity for H2O
2. Which of the following statements concerning silicon and its bonding is false?
a. Silicon dioxide consists of linear molecules
b. Silicon has vacant 3d orbitals in its valence shell that can accept electrons from donor atoms
c. Silicon does not form very stable Si–Si bonds unless the silicon atoms are bonded to very electronegative elements
d. Silicon forms its strongest single bond with oxygen
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