atomic size at metallic element and non metal element

Elements - "An element is a pure substance which is made up of only one kind of atoms having the same atomic number." "The smallest particle of an element is the atom which, has all the properties of that element.&..

> Noble gases, some metals, carbon, silicon etc. have only one atom in their molecules. These are called monatomic molecules. Some elements have two atoms in their molecules. These are called diatomic molecules e.g., hydrogen (H 2 ), oxygen (O 2 ), nitrogen (..

. In the VIIIA or zero group, argon does not exhibit either metallic or non-metallic character. Why does the metallic character decrease from left to right across the period, in the periodic table? The elements to the left of the periodic table have a tendenc..

An element is the simplest form of matter that cannot be split into simpler substances or built from simpler substances by any ordinary chemical or physical method. There are 110 elements known to us, out of which 92 are naturally occurring while the rest have been prepared art..

Elements can be further divided into metals and non-metals..

We are familiar with the fact that the atoms of all elements, except noble gases, have an incomplete outermost shel..

We are familiar with the fact that the atoms of all elements, except noble gases, have an incomplete outermost shell. Consequently, most elements are reactive and they try to achieve the stability of the noble or inert gases by electron transfer or by electron sharing..

. Bronze was widely used for many years and this epoch of prehistory became Bronze Age. They indicate a gradual change in the life style of mankind. About 7000 years ago it was discovered that certain minerals would yield metals when placed in the fire. Many of these colored minerals were..

Metals loose electrons and form positively charged ions, therefore metals are called electropositive elements. Sodium metal forms sodium ions Na + , Mg forms positively charged Megnesium ions Mg 2 + and aluminium forms aluminium ions Al 3 +..

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