4) There are four isotopes of lead. Data on their atomic structure can be found in the table. Find the average atomic mass of lead in the space below.
Isotope
Protons
Neutrons
Percent Abundance
A
82
122
1.37%
B
82
124
26.26%
С
82
125
20.82%
D
82
126
51.55%

Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife

How do scientists think that gravity affected the formation of our solar system?

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.