Question

Identify the missing numbers for Oxygen (O) for "A" and "B" in the chart below. The first number in the answer selection represents "A", the second number in the answer selection represents "B."

A. 8, 8
B. 24, 16
C. 16, 16
D. 4, 8

Answer 1

Option A. 8, 8

Step-by-step explanation:

The following data were obtained from the question:

Proton number = 8

Atomic number = 8

Mass number = 16

A. Determination of the Neutron number. This can be obtain as follow:

Proton number = 8

Mass number = 16

Neutron number =.?

Mass number = Proton + Neutron

16 = 8 + Neutron

Collect like terms

Neutron = 16 – 8

Neutron = 8

B. Determination of electron number. This can be obtain as follow:

Since the atom is a neutral atom ( i.e O), the electron number is the same as the proton number. Therefore,

Electron = Proton = 8

Therefore,

A = 8 and B = 8