They are used to form covalent bonds.
How many valence electrons do transition elements have?
Elements in the same group have the same number of valence electrons. These are the outer-shell electrons that react with other elements.
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 the same group have the same number of valence electrons.
All elements in the same group have the same number of valence electrons.
Halogen family members, or elements in group 17, have 7 valence electrons.
That depends on the element in question. Atoms can have anywhere from 1 to 8 valence electrons. For the main group elements, Groups 1,2,13-18, the number of valence electrons are the number in the one's place in their group number, as follows: Group 1 Elements: 1 valence electron Group 2 Elements: 2 valence electrons Group 13 Elements: 3 valence electrons Group 14 Elements: 4 valence electrons Group 15 Elements: 5 valence electrons Group 16 Elements: 6 valence electrons Group 17 Elements: 7 valence electrons Group 18 Elements: 8 valence electrons The transition metals, Groups 3 - 12, are more complicated because they are adding d electrons, some of which behave like valence electrons, and many transition metals can have different numbers of valence electrons. For example manganese can have anywhere from 2 to 7 valence electrons.
All elements in the same A group will have the same number of valence electrons.
Valence electrons are responsible for chemical boding.
The valence electrons for elements in the same group stay the same, since the number of valence electrons corresponds to the group number.
The elements in 3A all have 3 valence electrons.
Valence Electrons are the outermost electrons in an element and they are used for bonding with other elements.