Question

Identify the atom below.
A. He
B. O
C. Ne
D. Na

Answer 1

A.) He is Helium (atomic number of 2)
B.) O is Oxygen (atomic number of 8)
C.) Ne is Neon (atomic number of 10)
D.) Na is Sodium (atomic number of 11)
(Hint: The atomic number gives the element it's identity, which is the number of protons it has)
I hope this helps!

Answer 2

Answer is: the atom is D. Na .

This atom has 11 electrons, because atom has neutral charge, this atom also has 11 protons, which means that atomic number of an element is 11.

Sodium has atomic number 11.

Electron configuration of sodium atom: ₁₁Na 1s² 2s² 2p⁶ 3s¹.

Helium has atomic number 2, oxygen 8 and neon 10.