Ruthenium

    Name: Ruthenium
    Symbol: Ru
    Number of Energy Levels: 5
    Electrons on the outer energy level: 1
    Atomic number: 44
    Atomic Mass: 101.07 Amu (Atomic Mass Units)
    Protons/Electrons: 44
    Neutrons: 57
    Density: 12.2 g/cm3
    Classification: Transition Metal

    Ruthenium (… read the full article)

      Technetium

      Name: Technetium
      Symbol: Tc
      Number of Energy Levels: 5
      Electrons on the outer energy level: 1
      Atomic number: 43
      Atomic Mass: 98 Amu (Atomic Mass Units)
      Protons/Electrons: 43
      Neutrons: 55
      Density: 11.5 g/cm3
      Classification: Transition Metal

      Technetium (… read the full article)

        Molybdenum

        Name: Molybdenum
        Symbol: Mo
        Number of Energy Levels: 5
        Electrons on the outer energy level: 1
        Atomic number: 42
        Atomic Mass: 95.94 Amu (Atomic Mass Units)
        Protons/Electrons: 42
        Neutrons: 54
        Density: 10.22 g/cm3
        Classification: Transition Metal

        Molybdenum (… read the full article)

          Niobium

          Name: Niobium
          Symbol: Nb
          Number of Energy Levels: 5
          Electrons on the outer energy level: 1
          Atomic number: 41
          Atomic Mass: 92.96638 Amu (Atomic Mass Units)
          Protons/Electrons: 41
          Neutrons: 52
          Density: 8.57 g/cm3
          Classification: Transition Metal

          Niobium (… read the full article)

            Zirconium

            Name: Zirconium
            Symbol: Zr
            Number of Energy Levels: 5
            Electrons on the outer energy level: 2
            Atomic number: 40
            Atomic Mass: 91.224 Amu (Atomic Mass Units)
            Protons/Electrons: 40
            Neutrons: 51
            Density: 6.49 g/cm3
            Classification: Transition Metal

            Zirconium (… read the full article)

              Yttrium

              Name: Yttrium
              Symbol: Y
              Number of Energy Levels: 5
              Electrons on the outer energy level: 2
              Atomic number: 39
              Atomic Mass: 88.90585 Amu (Atomic Mass Units)
              Protons/Electrons: 39
              Neutrons: 50
              Density: 4.469 g/cm3
              Classification: Transition Metal

              Yttrium (… read the full article)

                Strontium

                Name: Strontium
                Symbol: Sr
                Number of Energy Levels: 5
                Electrons on the outer energy level: 2
                Atomic number: 38
                Atomic Mass: 87.62 Amu (Atomic Mass Units)
                Protons/Electrons: 38
                Neutrons: 50
                Density: 2.54 g/cm3
                Classification: Alkaline Earth

                Strontium (… read the full article)

                  Rubidium

                  Name: Rubidium
                  Symbol: Rb
                  Number of Energy Levels: 5
                  Electrons on the outer energy level: 1
                  Atomic number: 37
                  Atomic Mass: 85.4678 Amu (Atomic Mass Units)
                  Protons/Electrons: 37
                  Neutrons: 48
                  Density: 1.532 g/cm3
                  Classification: Alkali Metal

                  Rubidium (… read the full article)

                    Krypton

                    Name: Krypton
                    Symbol: Kr
                    Number of Energy Levels: 4
                    Electrons on the outer energy level: 8
                    Atomic number: 36
                    Atomic Mass: 83.8 Amu (Atomic Mass Units)
                    Protons/Electrons: 36
                    Neutrons: 48
                    Density: 3.74 g/cm3
                    Classification: Noble Gas

                    Krypton (… read the full article)

                      Bromine

                      Name: Bromine
                      Symbol: Br
                      Number of Energy Levels: 4
                      Electrons on the outer energy level: 7
                      Atomic number: 35
                      Atomic Mass: 79.904 Amu (Atomic Mass Units)
                      Protons/Electrons: 35
                      Neutrons: 45
                      Density: 3.119 g/cm3
                      Classification: Halogen

                      Bromine (… read the full article)