2. Atoms & Elements

Isotopes differ from each other in what way?

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?

How many neutrons does a typical sodium atom have?

What are the atomic number and mass number for the carbon isotope with seven neutrons?

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

Which of the following elements is the least abundant in the Earth's crust?

Which of the following statements about the d-block elements in the periodic table is false?

How many neutrons are present in the most common isotope of potassium (K-39)?

Which subatomic particle determines the identity of an element?

Which of the following statements best describes isotopes?

How many neutrons does a sodium (Na) atom typically have?

How many neutrons are in the nucleus of a potassium atom with a mass number of 39?

What is the mass number for lithium?

What is the mass number of an atom of nitrogen that contains 8 neutrons?