Question

in this performance task you will answer four questions. the electron configurations of two unknown atoms are shown. electron configuration atom x atom y based on the electron configuration of each atom, what is the number of valence electrons for each atom? atom x = 1, atom y = 1 atom x = 11, atom y = 17 atom x = 1, atom y = 7 atom x = 10, atom y = 10

Explanation:

Step1: Recall the definition of valence electrons

Valence electrons are the electrons in the outermost shell of an atom.

Step2: Count valence electrons for Atom X

Looking at Atom X's electron - shell diagram, the outermost shell has 1 electron.

Step3: Count valence electrons for Atom Y

Looking at Atom Y's electron - shell diagram, the outermost shell has 7 electrons.

Answer:

Atom X = 1, Atom Y = 7 (the third option)