No, the square root of 5 is not a whole number.
To understand why, let’s look at what whole numbers are. Whole numbers are non-negative integers, which include 0, 1, 2, 3, and so forth—essentially the numbers you can count with.
The square root of 5 is approximately 2.236, which is not an integer. Since it’s not a whole number, we can conclude that the square root of 5 does not fall into the category of whole numbers.