Question

How many valence electrons would be found in an atom with the atomic number of 51?

• A. 5
• B. 51
• C. 8
• D. None of the above

Answer 1

Answer: (A)

5

Antimony element has the atomic number of 51. The valence electrons are referred as the free electrons which are available at the last orbit. In antimony, the total electron shells are 5. The electronic configuration of Antimony is 2, 8, 18, 18, 5. Thus, the number of valance electron is 5.