Two isotopes of potassium are K-37 and K-42. Explain, in terms of subatomic particles, why K-37 and K-42 are isotopes of potassium.

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom

What is the chemical name of the compound na2co3? use the list of polyatomic ions and the periodic table to you answer. a. sodium carbon oxide b. sodium carbonate c. sodium(ll) carbonate d. sodium oxalate

How does the viscosity of magma change as magma cools?