Lead

Lead
 * Name of the element **: Lead.


 * The element symbol: ** Pb.


 * Group number and period on the periodic table: ** group number is 14 and the period is 6.


 * Name of the person and the year it was discovered: ** It is unknown who discovered lead but has been known of for thousands of years.


 * State of the element at room temperature: **A solid.


 * The colour of the element: **It is a bluish colour but turns grey when exposed to air.


 * The atomic number and mass: **The atomic number is 82 and the mass is 207.2.


 * Number of protons, neutrons and electrons: ** The number of protons/electrons is 82 and the number of neutrons is 125.


 * <span style="font-family: 'Century Gothic','sans-serif'; font-size: 19px;">What is the boiling point: **<span style="font-family: 'Century Gothic','sans-serif'; font-size: 19px;">The boiling point is 1740 <span style="color: black; font-family: 'Century Gothic','sans-serif'; font-size: 19px;">°c.


 * <span style="font-family: 'Century Gothic','sans-serif'; font-size: 19px;">What is the melting point: **<span style="font-family: 'Century Gothic','sans-serif'; font-size: 19px;">The melting point for lead is 327.5 <span style="color: black; font-family: 'Century Gothic','sans-serif'; font-size: 19px;">°c.


 * <span style="color: black; font-family: 'Century Gothic','sans-serif'; font-size: 19px;">Metal/Metalloid/Non-metal: **<span style="color: black; font-family: 'Century Gothic','sans-serif'; font-size: 19px;">It is a soft metal.


 * <span style="color: black; font-family: 'Century Gothic','sans-serif'; font-size: 19px;">5 important facts: **


 * <span style="color: black; font-family: 'Century Gothic','sans-serif'; font-size: 19px;">. **<span style="color: black; font-family: 'Century Gothic','sans-serif'; font-size: 19px;">Lead is mentioned in the bible in the book of Exodus.

<span style="color: black; font-family: 'Century Gothic','sans-serif'; font-size: 19px;">. Alchemists believed lead to be the oldest metal and associated withthe planet Saturn.

<span style="color: black; font-family: 'Century Gothic','sans-serif'; font-size: 19px;">. Lead is used in pencils, batteries, bullets and paints

<span style="color: black; font-family: 'Century Gothic','sans-serif'; font-size: 19px;">. <span style="font-family: 'Century Gothic','sans-serif'; font-size: 19px;">The word lead comes from the Greek word protos and the symbol Pb from plumbum.

<span style="font-family: 'Century Gothic','sans-serif'; font-size: 19px;">. Two of the most well known are <span style="color: windowtext; font-family: 'Century Gothic','sans-serif'; font-size: 19px; text-decoration: none;">lead nitrate <span style="font-family: 'Century Gothic','sans-serif'; font-size: 19px;">, which is found in explosives and lead chloride, which is used in the making of white paint.