question 13\ncalcium has the atomic number 20. if it has a mass number of 46, how many neutrons are…
question 13\ncalcium has the atomic number 20. if it has a mass number of 46, how many neutrons are present?\no 46\no 66\no 20\no 26
Answer
Explanation:
Step1: Recall the formula
The formula for calculating the number of neutrons is $n = A - Z$, where $A$ is the mass - number and $Z$ is the atomic number.
Step2: Identify given values
Given that $Z = 20$ (atomic number) and $A = 46$ (mass number).
Step3: Calculate the number of neutrons
$n=A - Z=46 - 20 = 26$.
Answer:
D. 26