Answers

2014-09-23T07:38:49+08:00
A=metallic bond is formed in metals. Let's take the example of copper. The copper atoms are arranged in a certain manner in a copper metal. Here the valence electrons are free to move around in a piece of copper metal. These valence electrons are attracted towards the positive cores of copper. This results in metallic bonding. 


b=A chemical metallic bond is formed when two metallic atoms share the valence electrons. A point noteworthy is, the valence electronics of any region of the metal atoms can be shared to form metallic bonds.


examples: 


Any metallic element has metallic bonds: 
Copper, zinc, sodium, lithium, francium, iron, cobalt, calcium, magnesium, silver, gold, barium, platinum, chromium are a few. 
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2014-09-23T07:42:36+08:00
Electrostatic attraction between the positively charged atomic nuclei of metal atoms and the delocalised electrons in the metal. Properties of metals.

Ex:
platinum, copper, iron, anything metallic element that has metallic bond.



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