A: Any element in group 1 has just one valence electron. Examples include hydrogen (H), lithium (Li), and sodium (Na). Any element in group 18 has eight valence electrons (except for helium, which has a total of just two electrons). Examples include neon (Ne), argon (Ar), and krypton (Kr).Click to see full answer. Likewise, people ask, how do you find valence electrons without using the periodic table?All the noble gases in group 18 fall are inert. A way to find valence electrons without the periodic table is using the atomic number and drawing a diagram. The atomic number is how many protons and electrons the atom has. That means an atomic number of 8 (oxygen), has 8 protons and 8 electrons.Secondly, where are the valence electrons in an atom? Answer and Explanation: The valence electrons of an atom are those in the outermost shell. Electrons are all located outside the nucleus of an atom, with protons and neutrons Accordingly, what are valence electrons used for by an element? Valence electrons are the outermost shell electrons of an atom which it uses to form bonds with other atoms.What is the formula for valence electrons?The number of valence electrons for molecules can be calculated by adding the valence electrons of all the atoms that form that respective molecule. 2⋅1+1⋅6+4⋅6=32e− .
