42
There are 13 protons in the nuclei of aluminum.
molybdenum has 13 protons and 13 electrons
82
The number of protons in an atom of an element defines its identity on the periodic table. Molybdenum has 42 protons in its nucleus, which is why it is classified as element 42.
Phosphorus has 15 protons in its nucleus.
Phosphorus: 15 protonsMolybdenum: 41 protonsAluminium: 13 protonsCadmium: 48 protonsChromium: 24 protonsLead: 82 protons
42 protons, 42 electrons, 14 neutrons(?) Whatever the atomic number is, that's the the number of protons are there.
An element's atomic number gives its number of protons. Checking the periodic table, we see that molybdenum is the element with the atomic number of 42. Thus molybdenum has 42 protons in its nucleus.
Most molybdenum atoms have 54 neutrons. The atomic number (number of protons) of molybdenum is 42, and its weight (number of protons and neutrons) is around 96. 96 - 42 = 54.
15 (Its atomic number)
The neutral atom of molybdenum has 42 electrons.
The band of stability graph shows that there is an optimal ratio of protons to neutrons in atomic nuclei for stability. Nuclei with too few or too many neutrons compared to protons are less stable and tend to undergo radioactive decay.