What are the chemical properties of BORON & CARBONDIOXIDE?
Carbon dioxide is a linear covalent molecule. It is an acidic oxide and reacts with water to give carbonic acid. In an aqueous solution it forms carbonic acid, which is too unstable to be easily isolated. Latent heat of vaporization : 571.08 kJ/kg Vapor pressure : 58.5 bar It will not burn or support combustion. Where as Boron, combines with oxygen in the air to form boron trioxide (B2O3). Boron trioxide forms a thin film on the surface that prevents further reaction with oxygen. Boron is not soluble in water. It normally does not react with acids. In powder form, it reacts with hot nitric acid (HNO3) and hot sulfuric acid (H2SO4). It also dissolves in molten (melted) metals. Atomic number 5 Atomic mass 10.81 g.mol -1 Electronegativity according to Pauling 2.0 Density 2.3 g.cm-3 at 20°C Melting point 2076 °C Boiling point 3927 °C Vanderwaals radius 0.098 nm Ionic radius 0.027 nm Isotopes 2 Electronic shell [ He ] 2s22p1 Energy of first ionisation 800.5 kJ.mol -1 Energy of second ionisa
