WebExplaining reactivity. The Group 1 elements have similar properties because of the electronic structure of their atoms. – they all have one electron. in their outer shell. Web3 rows · 1 electron occupies the third shell This electronic configuration can be written as 2.8.1 (each ...

Electronic structure - The periodic table - AQA - BBC …

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... WebShells Electrons orbit the nucleus of an atom at different ranges, called shells. Each shell has a different energy level, increasing the further it is from the nucleus. Each energy level is given a number called the … how do i find my hmrc office address

Electronic structure - The periodic table - AQA - GCSE Chemistry

WebAn electron shell, or main energy level, is the part of an atom where electrons are found orbiting the atom's nucleus.. In chemistry and atomic physics, an electron shell may be … 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... 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 … how do i find my hmrc tax code