2. Atoms & Elements

Which of the following is the correct nuclear symbol for the isotope of beryllium with mass number a = 10?

How many neutrons are present in an atom of silicon-30?

Which of the following isotopes is not possible?

Which of the following best describes how radioactive isotopes differ from stable isotopes?

Which of the following is NOT a true statement regarding radioactive isotopes?

Which of the following best describes the difference between diploid and haploid cells?

Which isotope has 13 protons and 14 neutrons?

Which of the following is the correct symbol for the isotope of potassium that has 22 neutrons?

A radioactive isotope of carbon, 14C, undergoes beta decay to form an unknown isotope X. Which of the following is the correct identity of isotope X?

How many protons are present in the isotope lithium-6?

Which element has an isotope with 78 protons?

Which property of argon makes it useful for potassium-argon dating?

Which term describes two atoms of the same element that have different numbers of neutrons?

Vanadium has an atomic number of 23. How many neutrons are present in the most abundant isotope of vanadium?

Which term is used to describe isotopes of atoms that have unstable nuclei and undergo radioactive decay?