Question 1986
Which element is represented by the symbol Cr?
Question 1987
What is the electronic configuration of the element with atomic number 27?
Question 1988
What is the electronic configuration of the element with atomic number 25?
Question 1989
What is the atomic number of the element with the electronic configuration [Ar] 3d¹⁰ 4s¹?
Question 1990
What is the atomic number of the element with the electronic configuration [Ar] 3d⁵ 4s¹?