18. True of False? Silver is made of only one kind of atom.
19. True of False? The number of protons in tin can change from atom to atom.
20. True of False? Radon is made of three different kinds of atoms.
18. False???
19. True???
20. True???
I feel like I got 19 wrong.
Silver is an element, not a compound. 18 is True
19 is True. The number of protons determines the element. Electrons can come and go, and changing the number of neutrons just makes a different isotope of the same element. Change the protons, though, and it's a different element altogether.
Radon is also an element. One kind of atom.
Though, like all elements, it may have various isotopes. That is not usually counted as different atoms, however.
Thank you oobleck :)
To determine the answers to these questions, we need to consider the atomic structure of each element.
18. False. Silver (Ag) is not made up of only one kind of atom. It is an element that consists of multiple atoms bonded together. The atomic number of silver is 47, meaning there are 47 protons in the nucleus of each silver atom. However, silver can have different isotopes, which means that some atoms may have different numbers of neutrons in their nuclei.
19. False. The number of protons in an element's nucleus is what defines its atomic number and determines its identity. Tin (Sn) always has an atomic number of 50, which means that every tin atom contains 50 protons. This number remains constant from atom to atom and is unique to the element.
20. False. Radon (Rn) is an element that belongs to the noble gas group. It is made up of only one kind of atom, specifically radon atoms. Each radon atom has an atomic number of 86, indicating that there are 86 protons in the nucleus of every radon atom. Therefore, radon is not made up of three different kinds of atoms, but rather consists solely of radon atoms.