(b) State the colours of the following compounds, (i) CdS (ii) TiO2 (iii) C0203 (iv) Cr2O3 (V) MnO4
antal with the following properties.​

An observation that requires measurement is called quantitative observable or qualitative

Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?

Covalent bonds generally form when the bonded elements have a difference in electronegativity less than 1.5. subtract the electronegativities for the following pairs of elements and predict whether they form a covalent bond. electronegativity difference of c and c: ionic covalent electronegativity difference of mg and cl: ionic covalent