colspan=2 style="background:
- d8d8d8;" | Noble gases
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- a9a9a9; margin:2px;" |
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↓ دورة (جدول دوري)
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1
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title="Helium: noble gases
- primordial; gas" style="text-align
- center; vertical-align:bottom; width:210px; background:
- f0f0f0; border:2px solid #8811ff; ;"| Helium (He)
2
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2
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title="Neon: noble gases
- primordial; gas" style="text-align
- center; vertical-align:bottom; width:210px; background:
- f0f0f0; border:2px solid #8811ff; ;"| Neon (Ne)
10
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3
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title="Argon: noble gases
- primordial; gas" style="text-align
- center; vertical-align:bottom; width:210px; background:
- f0f0f0; border:2px solid #8811ff; ;"| Argon (Ar)
18
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4
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title="Krypton: noble gases
- primordial; gas" style="text-align
- center; vertical-align:bottom; width:210px; background:
- f0f0f0; border:2px solid #8811ff; ;"| Krypton (Kr)
36
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5
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title="Xenon: noble gases
- primordial; gas" style="text-align
- center; vertical-align:bottom; width:210px; background:
- f0f0f0; border:2px solid #8811ff; ;"| Xenon (Xe)
54
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6
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title="Radon: noble gases
- from decay; gas" style="text-align
- center; vertical-align:bottom; width:210px; background:
- f0f0f0; border:2px dashed #773300; ;"| Radon (Rn)
86
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Legend
style="border:2px solid #8811ff; background:
- f0f0f0" | نويدة ابتدائية
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style="border:2px dashed #773300; padding:0 2px; background:
- f0f0f0" | اضمحلال نشاط إشعاعي
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Atomic number color: red=gas
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- f0f0f0;" |
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