PLZ..
1. What subatomic particles are combined in nucleosynthesis to form the nucleus? a. electrons and protons
b. electrons and neutrons
c. neutrons and quarks
d. neutrons and protons

2. Which of the following is true about the use of atomic numbers in the synthesis of elements in laboratories?
a. Atomic numbers helped determine the origin of new elements.
b. Atomic numbers helped predict the properties of undiscovered elements
c. Patterns of chemical reactions were discovered using atomic mass.
d. Lab-made elements were created by calculating the number of neutrons in atoms.