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Mass number is found by adding the number of protons plus the number of neutrons. Electrons are not added because they are so minute that their masses have almost no bearing on the total mass of the atom.

In this case, the mass number would be about 214.

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15y ago

This element has an atomic number of 82 and a mass number of 207. It's lead (Pb), and it's Pb-207, one of the three stable isotopes of lead. A link is provided below.

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Lead-208

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Lead

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Q: What element has 82 protons and 126 neutrons?
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What element has 86 electrons 125 neutrons 82 protons?

leadLead but it has 82 protons and electrons and 125 neutronshope i helpedLead 125, with a -4 chargeradon


What has 82 protons and 126 neutrons?

Lead-208, which is 52.3% of natural lead.


What element has 82 protons and 124 neutrons?

the element is lead and the particular isotope is Pb-206


What has 86 electrons125 neutrons and 82 protons?

The element with 86 electrons, 125 neutrons, and 82 protons is the element Lead (Pb). The number of protons (atomic number) determines the element, and in this case, it is 82 for lead. The sum of protons and neutrons gives the atomic mass, which is 207 in this case, making it the isotope with mass number 207.


How many protons neutrons and electrons are in Pb 208?

Lead, (Pb) has an Atomic number of 82 (you can look this up on a periodic table).This means it has 82 Protons and a neutral atom also has 82 electrons.To find the number of Neutrons you subtract the Atomic Number (82) from the Atomic Mass (208).Therefore the number of Neutrons in this isotope of Lead is 208-82 = 126


What is the number of neutrons in an atom of lead?

Pb (lead) 82 protons 82electrons 125 neutrons


What is the ratio of neutrons to protons in a nucleus of radon 222?

Protons = 82 Neutrons = 214 - 82 = 132 So ratio of protons to neutrons = 82 : 132 or 1 : 1.61


How is an element with 56 protons and 82 neutrons related to an element with 56 protons and 78 neutrons?

They are both Isotopes of Barium. The 56 protons tell us that the element is Barium and when you add the neutrons with the protons you get barium138 and barium134. They are both stable isotobes of barium but of all the barium in the world about 72% is barium138 and 2% is barium134.


How many protons and electrons nd neutrons in lead?

Lead has: 82 Protons 82 Neutrons 125 Electrons


How many electrons protons and neutrons are in lead?

Lead, atom number 82, has 4 natural occurring isotopes Pb-204, 206, 207 and 208.They all have 82 protons and 82 electrons.The neutron number varies from 122, 124, 125 and 126 respectively.(Remember: atom number = p+ = e- and mass number = p+ + n0 )Pb-207 has 82 protons, 82 electrons and 125 neutrons


Which is the strongest stable element?

The largest known completely stable (e.g., stable to alpha, beta, and gamma decay) nucleus is lead-208 which contains a total of 208 nucleons (126 neutrons and 82 protons).


What atomic number of the element lead indicates that each atom of has lead?

82 protons