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Elements between 57 and 70 belongs to the f group. Elements from La - Lu belongs to this group. These are called Lanthanides.These elements are Lanthanides. They are placed separately. They have different chemical properties.
Heluim belongs to a group of elements called the noble gases
There's not really a "group of double bonds." There are five elements that'll do it - carbon, nitrogen, oxygen, phosphorus and sulfur.
Group-18 belongs to noble gases. The elements of this group are stable.
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All elements of group has same number of valence electrons.This property define their characteristics.
Elements between 57 and 70 belongs to the f group. Elements from La - Lu belongs to this group. These are called Lanthanides.These elements are Lanthanides. They are placed separately. They have different chemical properties.
Group-18 belongs to inert elements. The elements attain stability.
The most important criteria is the similarities between chemical properties.
Iron belongs to the transition state elements.
Platinum belongs to group 1 (elements) in the Strunz system and more specific it is classified as 01.AF (platinum group elements)
The group is usually just called "the nitrogen group" or group 15 or group 5A, but the old-fashioned name for that group are the pnictogens.
helium neon argon krypton xenon radon
Heluim belongs to a group of elements called the noble gases
Group 17 and 18 does not contain any metal.Group 17 belongs to halogens and group 18 belongs to noble gases.All the elements are non metals.