Chemistry

A) List the quantum numbers of all of the electrons in a lithium atom if the electrons are in the lowest available
energy states.
B) List the quantum numbers of all of the electrons in a sodium atom if the electrons are in the lowest available
energy states.
C) Why do Lithium and Sodium have similar chemical properties?
Problem 2.
A) What kind of atom has one less proton in its nucleus than does Helium?
B) How do two different isotopes of carbon differ from each other?
C) What force binds protons and neutrons together in a nucleus?
D) Does a stretched spring have more mass than an unstretched spring? Explain.
Problem 3. How much energy (in MeV) is released when two free protons and two free neutrons combine to form
a single Helium nucleus containing 2 protons and 2 neutrons?
Problem 4. Why is fusion energy thought to be safer than fission energy?
Problem 5. The isotope 3%” U has a half life of 1.59 x 105 years.
A) Find the decay rate A.
B) Find the time it would take for the activity of a sample of 333U to decrease by a factor of 16.
Extra Credit: (5 points)
How can measuring the carbon-14 activity of a sample of an animal bone allow one to determine how long ago the
animal was alive?