Question

what are valence electrons? • electrons found in the outermost energy level. • maximum number of valence electrons is eight (8). identify the element and number of valence electrons in each atom below: element name:? valence electrons:? element name:? valence electrons:?

Explanation:

Step1: Recall electron - shell rules

The first energy level can hold a maximum of 2 electrons, and the second and higher levels can hold a maximum of 8 electrons. The number of protons in the nucleus determines the element.

Step2: Analyze first atom

Count the number of electrons in the outermost shell. If the first atom has 6 electrons in the outermost shell and a total of 8 electrons (2 in the first shell and 6 in the second shell), it is oxygen (O). The number of valence electrons is 6.

Step3: Analyze second atom

If the second atom has 2 electrons in the outermost shell and a total of 4 electrons (2 in the first shell and 2 in the second shell), it is beryllium (Be). The number of valence electrons is 2.

Answer:

First atom: Element Name: Oxygen, Valence Electrons: 6
Second atom: Element Name: Beryllium, Valence Electrons: 2