Question

atomic structure notes
ks pg 2
neutral atom
a neutral atom has _ meaning the charge is _
in a neutral atom, the number of protons and electrons are _
example:
ion
an ion has _ the charge can be _ or _
in an ion, the number of protons and electrons are _
example:
calculating net charge:
charge =
● if there are more protons (+) than electrons (-) the atom has a _ charge
● if there are more electrons (-) than protons (+) the atom has a _ charge
● if there is the same number of protons (+) and electrons (-) the atom is _
check for understanding

1. what will always be the same for two elements of fluorine?
2. which of the following is true about subatomic particles?

a. electrons are negatively charged, located in the nucleus
b. neutrons have no charge, located outside the nucleus
c. protons are positively charged, located in the nucleus
d. the mass of an electron is equal to the mass of a proton and a neutron

Explanation:

1. Elements are defined by atomic number (number of protons), so two Fluorine atoms share this.
2. Protons are positively charged and in the nucleus; other options have incorrect properties.

Answer:

1. The number of protons.
2. c. Protons are positively charged, located in the nucleus