Question

An isotope with 8 protons, 9 neutrons, and 8 electrons would have which symbol? A) 16F

B) 16O
C) 17F
D) 17O

Answer 1

D) Oxygen-17

Oxygen-17 is an isotope with 8 protons, 8 electrons, and 9 neutrons.

Answer 2

Answer: D.
`_(8)^(17)\textrm {O}`

Explanation: Atomic number is the number of protons or the number of electrons.

Mass number is the sum of number of protons and number of neutrons.

Atomic number = number of electrons= number of protons = 8

Mass number = number of protons + number of neutrons= 8+9= 17

The representation of element is :

where Z= atomic number, A= mass number , X= chemical symbol of element

The representation of the element with atomic number 8 and mass number 17 is :
`_(8)^(17)\textrm {O}`.