Which emission causes the atomic number of a nuclide to decrease by 2 and its mass number to decrease by 4?
1.
an alpha particle
2.
a beta particle
3.
gamma radiation
4.
a positron

The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.

The biomedical technique in which a part of the brain is destroyed with electric current is known as a. electroconvulsive therapy b. prefrontal lobotomy c. bilateral cingulotomy d. tardive dyskinesia

To calculate the molarity of a solution, you need to know the moles of solute and the