6. Diamond is a bad conductor of electricity because:A. It has a tight structure B. It has a high densityC. It has no free electrons D. It is transparent to light7. Mixture containing 0.01 mole/300cm3 of NH4Cl and 0.1 mole/400cm3 of NH4OHhaving pKb = 5 has pH of:A. 4.00 B. 4.12C. 9.88 D. 10.008. 5g of urea (M.wt = 60) is dissolved in 250 cm3 of its solution. Concentration ofsolution will be:A. 5 % w/w B. 5 % v/wC. 0.34 M D. 0.34m

How many covalent bonds does each carbon atom in diamond form?23452How many covalent bonds does each carbon atom in graphite form?53423Why can graphite conduct electricity?Because it is a metalBecause it has delocalised electrons that can move along between its layersBecause it has a very high melting pointBecause all the electrons are fixed in place within the covalent bonds4Why can diamond not conduct electricity?Because all the electrons are delocalisedBecause all the electrons are fixed in place within the covalent bondsBecause it has a very high melting pointBecause it is not a metal5Why do diamond and graphite have such high melting points?Because they are so bigBecause they have very strong intermolecular bondsBecause they have delocalised electronsBecause they have very strong covalent bonds6Which statement best explains why graphite is soft?The covalent bonds are easy to breakIt can conduct electricityIt has a rigid structureThe layers of carbon atoms can slide over each other

Select all the properties of diamond.

explain the properties of diamond interms of its structure and bonding

Diamonds are mostly carbon atoms. Which elements, when mixed with the carbon, cause the diamonds to be a certain colour?Group of answer choicescolourless and translucentyellowbluegreen

Diamond is hard, but graphite is soft.(b) (100) plane is absent in the X-ray diffraction pattern of the BCC structure.(c) There is no Face Centered Tetragonal lattice.(d) Larger size anode has less corrosion.(e) A regular 2-D pentagon lattice is not possible.