WebThe outer shells of non-metal atoms gain electrons when they form ions: the ions formed are negative, because they have more electrons than protons the ions have the electronic structure of a... WebThe ions have a stable arrangement of electrons, with a complete outer shell. Reactions with water The alkali metals react with water to produce a metal hydroxide and hydrogen. For example,...
Shells and Subshells - A-Level Chemistry - Revision …
Web3 rows · The electrons in an atom occupy the lowest available energy level first. This is the shell nearest ... Mendeleev made an early periodic table. In the modern periodic table, elements are … WebRevise Group 7, also known as the halogens, with BBC Bitesize GCSE Chemistry (WJEC). Homepage. ... atom needs to have a full outer shell. Group 7 elements need to gain 1 electron to have a full shell. city club zacatecas numero
Chemical properties of the noble gases - Group 0
WebHelium atoms have two electrons in their outer shell. The atoms of the other noble gases have eight electrons in their outer shells. Uses of the noble gases The uses of the noble gases are... WebThese atoms are larger because they have more shells. The larger the atom, the further the outer electron is from the nucleus. The force of attraction between the nucleus and the electron is... WebThe ions have a stable arrangement of electrons, with a complete outer shell. Reactions with metals The halogens react with metals to produce salts. The salts are made up of ions, which are held... city club wikipedia