다음은 고장입니다.
* 그룹 1 (알칼리 금속) : These elements have one electron in their outer energy level. They are highly reactive and tend to lose this electron to form positive ions with a +1 charge.
* Examples:Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs), Francium (Fr)
* 그룹 2 (알칼리성 지구 금속) : These elements have two electrons in their outer energy level. They are also reactive but less so than alkali metals. They typically lose these two electrons to form positive ions with a +2 charge.
* Examples:Beryllium (Be), Magnesium (Mg), Calcium (Ca), Strontium (Sr), Barium (Ba), Radium (Ra)
중요한 참고 : There are a few exceptions to this rule, particularly with elements in the transition metal series (Groups 3-12). These elements can have varying numbers of electrons in their outer energy level, making their reactivity more complex.
