Periodic Table

Periodic Property vary in Periodic Table: Electron affinity is a periodic property. As one goes from left to right (i.e., as atomic number increases) in a…

About 85% of all elements are metals. They show some special properties like metallic lusture, ductility, high electrical and thermal conductivity. This is due to…

Silver is extracted from the argentite ore by the Mac-Arthur and Forrest’s cyanide process. The various steps involved in this process are as follows. Concentration…

The solution containing sodium argento cyanide is filtered to remove insoluble impurities and filtrate is treated with zinc dust, silver gets precipitated. 2Na [Ag(CN)2] +…

Physical properties i) It is a white lustrous metal. ii) It melts at 1233°C and boils at 2485°C. iii) Molten silver absorbs about twenty times…

Silver Occurrence: Silver occurs both in the native as well as in the combined state. Ores mor Principles: The important ores of silver are i) Argentite…

Due to the electrostatic attractive between opposite poles and repulsion between similar poles the molecules orient themselves in such a way that the negative pole…

Melting and Boiling points of Hydrogen Fluoride (HF) are higher than Hydrochloric acid (HCl),  Hydrobromic acid (HBr) and Hydrogen iodide (HI). Fluorine has the highest electronegativity…

Properties of Zinc Physical properties: i) Zinc is a bluish white metal ii) It is good conductor of heat and electricity. iii) It is malleable…

The extraction of Zinc from Zinc blende involves the following steps. Concentration The ore is crushed and then concentrated by froth-floatation process. Roasting The concentrated…