2. Atoms & Elements

Carbon-12 and carbon-13 are isotopes of carbon. Which of the following statements is correct?

How do isotopes of a given element differ from each other?

What is the atomic number of both isotopes of nitrogen?

Isotopes differ from each other in what way?

Lithium has 3 protons. How many neutrons are present in the isotope lithium-8?

How many neutrons are present in the isotope nitrogen-14 (N-14)?

Which isotope is represented by an atom with 2 protons and 4 neutrons?

How many protons and neutrons are present in one atom of 30^{14}Si?

How many neutrons are present in an atom of 226Ra?

If you know the number of protons in a neutral atom, which of the following pieces of information can NOT be determined?

Neutral atoms of all isotopes of a given element have the same:

How many neutrons are in an atom of sodium (Na) with an atomic mass of 23?

How many neutrons are in an atom of sodium with a mass number of 23?

Given that the mass of the isotope Br-81 is 80.9163 amu, which statement is correct about Br-81?

How many neutrons does a typical sodium atom have?