colspan=2 style="background:
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↓ دورة (جدول دوري) |
1 |
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 |
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 |
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 |
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 |
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 |
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
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