select the correct answer.\nthe atomic number of krypton (kr) is 36, and its mass number is 84. how many…

select the correct answer.\nthe atomic number of krypton (kr) is 36, and its mass number is 84. how many neutrons does it have?\na. 18\nb. 36\nc. 48\nd. 72

select the correct answer.\nthe atomic number of krypton (kr) is 36, and its mass number is 84. how many neutrons does it have?\na. 18\nb. 36\nc. 48\nd. 72

Answer

Explanation:

Step1: Recall the formula

The formula for calculating the number of neutrons is $n = A - Z$, where $n$ is the number of neutrons, $A$ is the mass - number, and $Z$ is the atomic number.

Step2: Identify the values

Given that $Z = 36$ (atomic number of krypton) and $A = 84$ (mass number of krypton).

Step3: Calculate the number of neutrons

$n=A - Z=84 - 36=48$.

Answer:

C. 48