![]() ![]() Periodic table Chemical element Group Chemistry Noble gas, table, chemical Element, furniture, text png 1170x500px 507.27KB.Periodic table Chemical element Chemistry Symbol, symbol, chemical Element, angle, text png 2000x1148px 13.08KB.Periodic table Oxidation state Atom Valence electron, table, chemical Element, furniture, text png 3215x2276px 700.86KB.Periodic table Desktop Chemistry, desktop, chemical Element, text, chemistry png 3320x2197px 1.47MB.Periodic table Chemical element Atomic number Atomic mass, table, chemical Element, furniture, text png 1024x563px 175.68KB.Periodic table Chemical element Chemistry Atomic number Symbol, elements, text, rectangle, material png 3840x2160px 546.02KB.Periodic table Chemical element Electronegativity, table, chemical Element, furniture, text png 1800x990px 339.7KB.Chemistry, Periodic Table, Chemical Element, Nihonium, Atomic Mass, Nonmetal, Electron Configuration, Lanthanum, Periodic Table, Chemical Element, Chemistry png 1280x704px 266.68KB.Hydrogen text, Hydrogen Chemical element Symbol Periodic table Chemical compound, element, angle, white, text png 1024x1024px 27.52KB.Periodic table Atomic number Chemistry Chemical element, periodic, chemical Element, angle, furniture png 3840x2160px 177.66KB.Periodic table Chemistry Chemical element Worksheet, dynamic elements, chemical Element, angle, furniture png 1920x1080px 357.83KB.Periodic table Alkali metal Chemical element Chemistry, great element, chemical Element, text, rectangle png 2592x1728px 434.25KB.Periodic table Chemical element Atomic number Atomic mass, table, chemical Element, furniture, text png 1280x704px 249.85KB.We will be looking at group 1, group 7 (the halogens) and group 0 in more detail later on in this whole subsection. ![]() All of the group 0 elements (the noble gases) are unreactive. For example, all of the group 1 elements (the alkali metals) react very aggressively. It is useful to know what group an element is in because the group will inform us about how the element will behave/react. So, helium, neon and argon all have full outer shells. The only exception to this rule is group 0, which tells us that the elements have full outer shells.Elements in group 7 have 7 electrons in their outermost shell fluorine, chlorine and bromine are all in group 7, so will all have 7 electrons in their outermost shell.Elements in group 2 have 2 electrons in their outermost shell beryllium, magnesium and calcium are all in group 2, so will all have 2 electrons in their outermost shell.Elements in group 1 have 1 electron in their outer most shell lithium, sodium and potassium are all in group 1, so will all have 1 electron in their outermost shell.The groups (columns) tell us how many electrons the elements have in their outermost shell. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |