Question

Which of the following statements are true regarding ${}_8^{16}x$ where $x$ is given element

• A. The atomic mass $x$ is $16$ units
• B. The atomic mass $x$ is $8$ units
• C. The no. of electrons in $x$ is $8$
• D. The no. of protons in $x$ is $16$ units

Answer 1

Answer: (A), (C)

The correct options are
A The atomic mass $x$ is $16$ units
C The no. of electrons in $x$ is $8$

Atomic mass is approximately equivalent to the number of protons and neutrons in the atom. Here, the atomic number of the given element $x$ is $8$ and atomic mass number is $16$. The number of electron is equal to the number of proton. So the element $x$ has $8$ electrons.