Scelta multipla
How many electrons are in a neutral sodium atom?
138
views
9. Electrons in Atoms and the Periodic Table
Electronic Structure: Number of Electrons
Scelta multipla
How many electrons are in a neutral atom of phosphorus (P)?
A
30
B
16
C
31
D
15
Guida verificata passo dopo passo1
Recall that in a neutral atom, the number of electrons is equal to the number of protons.
Identify the atomic number of phosphorus (P) from the periodic table, which represents the number of protons in the atom.
Note that the atomic number of phosphorus is 15, meaning it has 15 protons.
Since the atom is neutral, the number of electrons must also be 15 to balance the positive charge of the protons.
Therefore, the number of electrons in a neutral phosphorus atom is equal to its atomic number, which is 15.
Video correlati
Pratica correlata
