Gdz Po Himii 11 Klass Bazovyj Uroven Proverochnaja Rabota 1gabrieljan -

: Multiple-choice items focusing on identifying isotopes or determining the number of neutrons/protons.

: When an atom becomes a cation (positive ion), it loses electrons; an anion (negative ion) gains them. : Multiple-choice items focusing on identifying isotopes or

: Remember that for main-group elements, the group number indicates the number of valence electrons. it loses electrons