Question

Which statements describe isotopes? Check all that apply.

Isotopes of the same element have the same number of protons.

Isotopes of the same element have the same number of neutrons.

All isotopes are unstable.

Some isotopes are unstable.

Isotopes are identified by their mass number.

Isotopes are identified by their atomic number.

Answer 1

Answer:

I got it correct on e2020

Explanation:

The answer is 1, 4 and 5.

Answer 2

Answer:

From the following, the statements that apply to isotopes are:

1. Isotopes of the same element are that have the same number of protons.
2. Some isotopes are unstable.
3. Isotopes are being identified by their mass number not atomic number.

Explanation

1. Isotopes of the same  element are that which have the same number of protons but different numbers of neutrons.
2. It is different forms of single element . Ex - Carbon12 and Carbon14 are both isotopes of carbon, one with 6 neutrons and one with 8 neutrons.
3. Due to differ in nucleons(proton + neutron), the isotopes are identified by their mass number not atomic number.
4. Stable and unstable are the two main types of isotopes. The known stable isotopes are 254. The unstable isotopes are those which  are artificial(lab made).So some isotopes are unstable not all isotopes.

Hence the above explanation supports the correct statements.

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