Some rocks contain pure metals like gold silver and copper. These are elements on the Periodic Table and are called 'native' ores. Other metals like iron,magnesium and zinc are found as metallic oxides in their ores and have to be refined to make the metal. The ores are pounded to dust and reduced by removing the oxygen molecule in the oxide to convert them back to the metallic state. This is done in a furnace.
1
The Periodic Table has 18 groups and 7 periods.
The halogens are located on the left of the noble gases on the periodic table. These five toxic, non-metallic elements make up Group 17 of the periodic table and consist of: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).
Because it got 1 proton.
Alkaline earth metals is a group that is in the Periodic Table. Alkaline earth metals is said to be the 2nd most radioactive. Any element that has a greater atomic number than 83 is radioactive. If this 3rd sentence isn't true please blame Fjwood in Answers.com. Because the 3rd sentence I got it from Fjwood. NO OFFENSE FJWOOD.
Am stands for Americium in periodic table. It has got mass number of 95. It has got atomic mass of 243. It is a radioactive element. The half life of it's most stable isotope Am 243 is 7,370 years.
Because it got the highest amount of protones.
The nonmetals in group 16 of the periodic table are oxygen, sulfur, selenium, tellurium, and polonium. These elements have properties such as being poor conductors of heat and electricity and typically form negative ions in chemical reactions.
Helium has the highest ionization potential in the periodic table due to its stable electron configuration with a full valence shell of electrons. This makes it difficult to remove an electron from a helium atom, resulting in a high ionization energy.
The periodic table got its name from the periodic pattern of chemical properties that occur when elements are organized by increasing atomic number. This organization allows elements with similar properties to fall in the same column, creating a "periodic" pattern.
Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs), and Francium (Fr) are classified as alkali metals. These elements are highly reactive, easily lose their outermost electron to form a positive ion, and are typically found in Group 1 of the periodic table.
Pick any transition metal or any poor metal except aluminium, and you'll have your answer. The poor metals are aluminum (Al), gallium (Ga), indium (In), tin (Sn), thallium (Th), lead (Pb) and bismuth (Bi). All other metals in Group 3 through Group 12 metals which are between the Alkaline Earth metals and those poor metals (except aluminium) have multiple oxidation numbers. Need a link to a good Periodic Table of the elements? Got one for you. It's got it all, and each element on the table is a hyperlink to a post about that particular element. Bookmark this puppy and learn how to use it. Please. It'll take you through high school chemistry and into college chemistry with no trouble at all.