QuestionWhat element has a mass number of 100 and 56 neutrons? A) Fm B) Ru C) Ba D) Cn E) Ra

Studdy Solution

STEP 1

Assumptions1. The mass number of the element is100. The number of neutrons in the nucleus of the element is563. The mass number of an element is the sum of the number of protons and neutrons in its nucleus

STEP 2

We need to find the number of protons in the nucleus of the element. We can do this by subtracting the number of neutrons from the mass number.
$Number\, of\, protons = Mass\, number - Number\, of\, neutrons$

STEP 3

Now, plug in the given values for the mass number and the number of neutrons to calculate the number of protons.
$Number\, of\, protons =100 -56$

STEP 4

Calculate the number of protons.
$Number\, of\, protons =100 -56 =44$

STEP 5

The number of protons in an atom is also the atomic number, which is unique for each element. By looking at the periodic table, we can see that the element with an atomic number of44 is Ruthenium (Ru).
So, the element with a mass number of100 and56 neutrons in its nucleus is Ruthenium (Ru).

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