Question

1. What is the difference between a sodium atom and a sodium ion?

2. Look at the Aluminum atom and ion. What group on the Periodic Table is Aluminum found in and how many valance electrons does it have?

3.What is a valance electron?

Answer 1

Explanation:

1 )Sodium atom is neutral whereas sodium ion is a charged specie with a charge of +1. The number of protons and electrons in sodium atom is same i.e 11 whereas the number of protons in sodium ion (11) is more than number of electrons (10). The size of sodium ion is smaller than sodium atom

Answer 2

Answer:

3. the outermost electron present in the cell is known as valence electron