How many valence electrons are present in a Ni atom with 28 electrons?

Question

Quizplus · Accepted Answer

Nickel (Ni) has an atomic number of 28, meaning it has 28 electrons. According to its position in the periodic table, it is a transition metal in the 4th period and the 10th group. The electron configuration of Ni is [Ar] 3d^8 4s^2. The valence electrons are those in the outermost shell, which includes the 4s and 3d electrons for transition metals. However, typically, the valence electrons are considered to be those that can be lost, gained, or shared in a chemical reaction. For nickel and other transition metals, the electrons in the 4s orbital are usually counted as valence electrons, which are 2 in this case.

How Many Valence Electrons Are Present in a Ni Atom