Question

part a
look at the model of a lithium atom. the red and blue subatomic
particles found in the nucleus are the ​ and ​. the
sum of these subatomic particles equals the atomic ​.
a protons and neutrons; mass number
b protons and electrons; mass number
c protons and neutrons; atomic number
d protons and neutrinos; identification number
part b
which element would be in the same family as lithium?
a calcium
b beryllium

Explanation:

• Part A: In an atom, protons and neutrons are located in the nucleus. The mass number of an atom is calculated as the sum of protons and neutrons (\(mass\ number = protons+neutrons\)). Electrons are outside the nucleus. The atomic number is equal to the number of protons. There is no “identification number” in atomic structure terms related to this context.
• Part B: Lithium (\(Li\)) is in Group 1 (alkali metals) of the periodic table. Calcium (\(Ca\)) is in Group 2 (alkaline - earth metals), beryllium (\(Be\)) is also in Group 2.

Answer:

• Part A: A. protons and neutrons; mass number
• Part B: (No correct option shown in the provided Part B choices. If we assume the intended correct element from common knowledge, for example, sodium (\(Na\)) which is also in Group 1 (same family as lithium). But based on the given options for Part B (calcium and beryllium are both in Group 2, so there is an error in the provided Part B options as neither is correct for being in the same family as lithium).)