Potassium has one valence electron. Valence electrons are the electrons found in an atom's outer energy level.
Potassium has an atomic number of 19, which means one neutral atom of this element has 19 electrons. There will be two electrons in the first energy level, eight in the second level, eight in the third level and one in the final energy level. This last electron is known as a valence electron.
It is possible to determine the number of valence electrons in an element by looking at the periodic table. The number of valence electrons corresponds to an element's group number. The vertical columns on the periodic table are also called groups. Because potassium is in group one, it can be assumed that it has one valence electron.Learn More
Titanium has four valence electrons. Valence electrons are generally the electrons located in the outermost shell of an atom and can be gained or lost in a reaction. Valence electrons can be determined by looking at the periodic table; because titanium is four columns from the left, it has four valence electrons.Full Answer >
The element manganese has seven valence electrons. The electronic configuration of manganese is [Ar] 3d5 4s2. The atomic number of manganese is 25 and it has 25 electrons out of which seven electrons are in the last shell or orbit.Full Answer >
Molybdenum has six valence electrons. The atomic number of molybdenum is 42, and its electron configuration is 1s22s22p63s23p63d104s24p64d55s1 or 2, 8, 18, 13, 1 electrons per shell. The electrons in the 4d55s1 constitute its valence electrons.Full Answer >
Chromium has six valence electrons. The atomic number of chromium is 24, and its electron configuration is 1s22s2 2p63s23p63d54s1 or 2, 8, 13, 1 electrons per shell. The electrons in the 3d54s1 shells form the valence electrons as the five electrons in the 3d shell participate in chemical bond formation.Full Answer >