Chemistry Project Maynard. Boron Atomic number:5 Atomic mass:10.81 Protons: 5 Neutrons: 6 Electrons:...
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Transcript of Chemistry Project Maynard. Boron Atomic number:5 Atomic mass:10.81 Protons: 5 Neutrons: 6 Electrons:...
Chemistry Project
Maynard
Boron
Atomic number:5
Atomic mass:10.81
Protons: 5
Neutrons: 6
Electrons: 5
Common isotopes: boron 10,11
Average Atomic mass: 10.811 amu
Electron configuration
1s2 2s2 2p1
[He] 2s2 2p1
Boron cont.
Manganese
Atomic Number: 25
Atomic mass: 54.938
Protons: 25
Neutrons: 30
Electrons: 25
Average Atomic mass: 54.93805 amu
Electron configuration
1s2 2s2 2p6 3s2 3p6 4s2 3d5
[Ar] 4s2 3d5
Manganese Cont.
Promethium
Atomic Number: 61Atomic Mass: 145Protons: 61Neutrons: 84Electrons: 61Common Isotopes: Promethium 145, 146, 147
Average atomic mass 145 amu Electron configuration
[Xe] 4f5 6s2 1s2 2s2p6 3s2p6d10 4s2p6d10f5 5s2p6 6s2
Promethium cont.