What are halogens , Lanthanide , Transition metal , Noble gas ,Actinide and Alkaline metal ?
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Answer:
Halogens:-
The halogens are a group in the periodic table consisting of five chemically related elements: Fluorine, Chlorine, Bromine, Iodine (I), and Astatine. The artificially created element 117 may also be a halogen. In the modern IUPAC nomenclature, this group is known as group 17. The name "halogen" means "salt-producing".
Lanthanide and Actinide:-
The lanthanide series includes elements 58 to 71, which fill their 4f sublevel progressively. The actinides are elements 89 to 103 and fill their 5f sublevel progressively. Actinides are typical metals and have properties of both the d-block and the f-block elements, but they are also radioactive.
Noble gas:-
The noble gases make up a group of chemical elements with similar properties; under standard conditions, they are all odorless, colorless, monatomic gases with very low chemical reactivity. The six naturally occurring noble gases are helium, neon, argon, krypton, xenon, and the radioactive radon.
Transition metal:-
The transition metals are a group of metals that are found in the middle of the periodic table. They all have similar properties. ... They are also harder than the post transition metals. They make colorful chemical compounds with other elements. Most of them have more than one oxidation state.
Alkaline metal:-
The alkaline earth metals are six chemical elements in group 2 of the periodic table. They are beryllium, magnesium, calcium, strontium, barium, and radium. The elements have very similar properties: they are all shiny, silvery-white, somewhat reactive metals at standard temperature and pressure.
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