The electronic configuration of an element Z is 2, 8, 8. (a) What is the atomic number of the element? (b) State whether element Z is a metal or non-metal. (c) What type of ion (if any) will be formed by an atom of element Z? Why? (d) What is special about the outermost electron shell of the atom of this element? (e) Give the name and symbol of element Z. (f) Name the group of elements to which Z belongs.
The electronic configuration of an element with atomic number (Z = 11) is 1s2, 2s2, 2p6, 3s1. The symbol of the element is:
An element 'Z' has the electronic configuration 2, 8. Name the element 'Z' and determine its atomic number.
(a) Write the electronic configuration of element X.
(b) What is the atomic number of element X?
(c) Is it a metal or a non-metal?
(d) What type of ion will be formed by an atom of element X? Write the symbol of the ion formed.
(e) What could element X be?