Question

how many neutrons are in the following isotope of bromine:
$_{35}^{79}br$
35
79
44
114
question 14
1 pts
a neutral atom has 8 electrons and an atomic mass number of 16. what atom is it?
s
o
ne
n

Explanation:

Step1: Recall neutron - proton relationship

The number of neutrons ($n$) in an atom is calculated by the formula $n = A - Z$, where $A$ is the mass number and $Z$ is the atomic number. For $^{79}_{35}Br$, $A = 79$ and $Z=35$.

Step2: Calculate number of neutrons

$n=79 - 35=44$

Step3: Recall atomic number - electron relationship for neutral atoms

For a neutral atom, the number of electrons is equal to the number of protons (atomic number $Z$). Given 8 electrons, $Z = 8$.

Step4: Identify the element

The element with atomic number $Z = 8$ is oxygen (O).

Answer:

For the first question: C. 44
For the second question: B. O