An element has an electronic configuration of 2,8,7. Its valency is
Identify the position of an element that has a configuration 2,8,7 in the periodic table.
Identify and name the element out of the following element whose electronic configurations are given below. 2,8,7
An element in the periodic table has the electronic configuration of 2, 8, 7. Which of the following family does the element belong to?