Question

66 POINTS! Which is true about the four atoms shown in figures A, B, C, and D?

A.
A and B are the same element. C and D are the same element, and a different element than A and B.


B.
A, B, and D are different elements, while C is an isotope of B.

C.
A, C, and D are different elements, while B is an isotope of D.

D.
B, C, and D are different elements, while A is an isotope of C.

Answer 1

-- A and B are the same element.

-- C and D are the same element, and a different element than A and B.

This is choice-A .

It all comes down to counting the number of protons in the nucleus of each atom.

Answer 2

A

Step-by-step explanation:

A and B are isotopes of one another but the same element

C and D are isotopes of one another but the same element

However, A and B have a different proton count than C and D, indicating different elements because the proton count is equivalent to the atomic number.