Multiple ChoiceHow many unpaired electrons are present in the ground state of a neutral atom of a group 4A (14) element, such as carbon (C)?48views
Multiple ChoiceWhich elements are most likely to react in the same manner in a chemical reaction?55views
Multiple ChoiceIn the electron configuration of nitrogen (atomic number 7), what is the role of the 2s electrons?43views
Multiple ChoiceWhich of the following elements has more core electrons than valence electrons?62views