Group IIA elements have 2 valence electrons.
The answer is 2+.
Group 2 metals have 2 valence electrons. In fact, the number of valence electrons of elements can be deduced from the group number (e.g. group VII elements have 7 valence electrons).
The group number of A elements in the AB numbering system indicates the number of valence electrons. For example, elements in Group 1 have 1 valence electron, elements in Group 2 have 2 valence electrons, and so on. Valence electrons are important because they determine the chemical properties and reactivity of an element.
The periodic table also has a special name for its vertical columns. Each column is called a group. The elements in each group have the same number of electrons in the outer orbital. Those outer electrons are also called valence electrons.
To determine the number of valence electrons in an element, look at its group number on the periodic table (group 1-18). The group number represents the number of valence electrons the element has. For example, elements in group 1 have 1 valence electron, while elements in group 18 have 8 valence electrons (except for helium, which has 2).
In a group, elements have the same number of outer shell electrons, which corresponds to the group number. For example, elements in Group 1 have 1 outer shell electron, elements in Group 2 have 2 outer shell electrons, and so on. This pattern helps determine the reactivity and chemical properties of elements within the same group.
Group 2 metals have 2 valence electrons. In fact, the number of valence electrons of elements can be deduced from the group number (e.g. group VII elements have 7 valence electrons).
Elements in group have same number of valence electrons. They also have same chemical properties.
All elements in the same group have the same number of valence electrons.
The valence electrons for elements in the same group stay the same, since the number of valence electrons corresponds to the group number.
Elements in the same group have the same number of valence electrons.
All elements in the same A group will have the same number of valence electrons.
The group number of A elements in the AB numbering system indicates the number of valence electrons. For example, elements in Group 1 have 1 valence electron, elements in Group 2 have 2 valence electrons, and so on. Valence electrons are important because they determine the chemical properties and reactivity of an element.
Elements in a group have the same number of electrons in their outer orbital.
Elements in the same group have the same number of valence electrons.
The Elements have a different Total Number of Electrons, but the same number of Valence Electrons.
All elements in the same A group will have the same number of valence electrons.
The number of valence electrons for the elements increases across a period, from 1 (group 1) to 8 (group 18).