Question

atomic structure practice
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atomic # | symbol | element name | mass # (rounded to nearest whole #) | # protons | # electrons | # neutrons
1 (3pts) | h | hydrogen | 1 | | total =
1st ring =
2nd ring = |
2 (3pts) | he | helium | 4 | | total =
1st ring =
2nd ring = |
3 (3pts) | li | lithium | 7 | | total =
1st ring =
2nd ring = |
4 (3pts) | be | beryllium | 9 | | total =
1st ring =
2nd ring = |
5 (2pts) | b | boron | 10 | | total =
1st ring =
2nd ring = |
6 (2pts) | c | carbon | | | total =
1st ring =
2nd ring = |
7 (2pts) | n | nitrogen | | | total =
1st ring =
2nd ring = |
8 (2pts) | o | oxygen | | | total =
1st ring =
2nd ring = |
9 (2pts) | f | fluorine | | | total =
1st ring =
2nd ring = |
10 (2pts) | ne | neon | | | total =
1st ring =
2nd ring = |
follow up questions: (5pts)
a) where are protons and neutrons located?
b) where are electrons located?
c) what number is the number of protons in an atom always equal to?
d) if an atoms is neutral, what other subatomic particle is equal to the protons?
e) the mass number of an atom is equal to the sum of which 2 subatomic particles?

Explanation:

a)

Protons and neutrons are located in the nucleus of an atom. The nucleus is the dense, central part of the atom.

Electrons are located in electron clouds (or energy levels/shells) surrounding the nucleus of the atom. These regions are outside the nucleus.

The number of protons in an atom is always equal to the atomic number of the element. The atomic number is a unique identifier for each element on the periodic table. Also, in a neutral atom, it is equal to the number of electrons, but the fundamental equality for protons is with the atomic number.

Answer:

In the nucleus of the atom.

b)