Question

atoms & isotopes
an atom is the smallest particle of an element. atoms are made up of subatomic particles: protons, neutrons and electrons.
subatomic particle mass (amu - atomic mass unit) charge location
proton 1 +1 nucleus
neutron 1 0 nucleus
electron 0 -1 in orbits around nucleus
an atom is neutral (no charge); the number of protons equal the number of electrons.
the mass number of the atom is the sum of the protons and neutrons.
the atomic number is the number of protons. this number will identify the atom.
isotopes are atoms with the same atomic number but different number of neutrons.
complete the missing information. the first one is completed as an example.
atomic structure atomic calculations identity isotope isotope notation
● protons
○ neutrons
● electrons atomic # = #p
#p = #e
mass # = #p + #n determine the atomic number and identify the atom by using the periodic table. symbol - mass mass#px
#protons = 3
atomic # = 3
#electrons = 3
#neutrons = 4
mass # = 7 li
lithium li - 7 73li
#protons =
atomic # =
#electrons = 9
#neutrons =
mass # = f - 19

Explanation:

Step1: Recall atomic - related rules

For a neutral atom, the number of protons (#P) equals the number of electrons (#e) and the atomic number. The mass number (Mass #) is the sum of the number of protons and neutrons (#N).

Step2: Determine the number of protons for F - 19

Since the atomic number of an element is equal to the number of protons and for fluorine (F), the atomic number is 9. So, #Protons = 9 and Atomic # = 9.

Step3: Calculate the number of neutrons

Given the isotope notation F - 19, the mass number is 19. Using the formula Mass #= #P + #N, and #P = 9, we can find #N. So, #N=Mass # - #P = 19 - 9=10.

Step4: Fill in the mass number

The mass number for F - 19 is 19.

Answer:

#Protons = 9
Atomic # = 9
#electrons = 9
#neutrons = 10
Mass # = 19
Identity: F, Fluorine
Isotope Notation: $^{19}_{9}F$