2. Atoms & Elements

Where in an atom are neutrons located?

Which chemical element is the primary constituent of a young star?

Which statement is true about all atoms?

How many protons are present in 20.02 mol of neon (Ne)?

How many elements exist as gases at room temperature (approximately 25°C and 1 atm)?

Which subatomic particle is found in the nucleus of an atom and has no electric charge?

Which of the following statements correctly defines a molecule?

How many electrons does a neutral lithium atom have?

How many protons are present in an atom of indium (In)?

Which of the following is considered the basic unit of matter?

Which of the following primarily determines the size of an atom?

How many electrons does a neutral potassium atom have?

Which of the following best describes a neutral atom?

Which statement about the nucleus of an atom is incorrect?

Which of the following is the atomic number of aluminum?