Podcast
Questions and Answers
What is the formula for calculating the atomic weight using isotope abundance?
What is the formula for calculating the atomic weight using isotope abundance?
- [(Percentage of isotopes)(atomic mass of 1st isotope)] + [(percentage of isotopes)(atomic mass of 2nd isotope)] (correct)
- [(Mass number of isotopes)(atomic mass of 1st isotope)] + [(mass number of isotopes)(atomic mass of 2nd isotope)]
- [(Number of protons)(atomic mass)] + [(Number of neutrons)(atomic mass)]
- [(Atomic weight)(mass number of isotopes)] + [(Atomic number)(percentage of isotopes)]
In the example provided, what is the abundance percentage of Chlorine-37?
In the example provided, what is the abundance percentage of Chlorine-37?
- 24% (correct)
- 54%
- 76%
- 46%
How many protons are present in Chlorine-35 isotope?
How many protons are present in Chlorine-35 isotope?
- 35
- 17 (correct)
- 19
- 18
Which law states that the physical and chemical properties of elements are a periodic function of their atomic masses?
Which law states that the physical and chemical properties of elements are a periodic function of their atomic masses?
What does the atomic number represent in an element's properties?
What does the atomic number represent in an element's properties?
Which term refers to the outermost electrons in an element's electronic configuration?
Which term refers to the outermost electrons in an element's electronic configuration?
Which atomic property describes the ability of an atom to attract electrons in a chemical bond?
Which atomic property describes the ability of an atom to attract electrons in a chemical bond?
In which direction does electronegativity trend across a period in the periodic table?
In which direction does electronegativity trend across a period in the periodic table?
What is the energy needed to remove an atom's most loosely held electron called?
What is the energy needed to remove an atom's most loosely held electron called?
Which element type usually attracts electrons and is considered electronegative?
Which element type usually attracts electrons and is considered electronegative?
What happens to ionization energy as you move from top to bottom in a group on the periodic table?
What happens to ionization energy as you move from top to bottom in a group on the periodic table?
Which atomic property measures the energy change when an atom gains a single electron and forms a negative ion?
Which atomic property measures the energy change when an atom gains a single electron and forms a negative ion?
What does the Law of Definite Proportions state?
What does the Law of Definite Proportions state?
Which statement describes the Law of Multiple Proportions?
Which statement describes the Law of Multiple Proportions?
What defines the atomic number of an atom?
What defines the atomic number of an atom?
What is true about isotopes?
What is true about isotopes?
If two elements form compounds with varying ratios of their masses, which law is being illustrated?
If two elements form compounds with varying ratios of their masses, which law is being illustrated?
In an isotope, if the atomic number is 12, what can we say for certain about the number of protons?
In an isotope, if the atomic number is 12, what can we say for certain about the number of protons?
