Respuesta :
Answer:
B. Three
Explanation:
The three dots that are surrounding the nucleus are electrons.
Explanation:
According to the diagram, the atom has 3 electrons.
Electronic configuration =
1s² 2s¹
- Element = Lithium
- Symbol = Li
- Period = 2
- Group = 1 (Alkali metal)
- valency = 1
Therefore,
Option B is correct✔