The universe contains billions of galaxies, each containing billions of stars.
true or false

The big bang nucleosynthesis theory states that elements were produced in the first few minutes of the big bang while elements have their origins in the interiors of stars, forming much later in the history of the universe.

If two atoms are bonded to a central atom with no lone pairs,how will they be arranged

How many protons, electrons, and neutrons are in each of the following isotopes? a. zirconium-90 b. palladium-108 c. bromine-81 d. antimony-123