The most similar element is hafnium, which is very nearly a chemical twin because the "lanthanide contraction" in elements from lanthanum to lutetium results in hafnium having almost the same atomic radius as zirconium. Other elements in the same periodic column as zirconium are titanium and rutherfordium.
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Zircon is ZrSiO4; the blue color is due to some impurities.
Both topaz and zircon are gemstones that are known for their beauty and vibrant colors. While they may have some similarities in appearance, they are distinct gemstones with different chemical compositions and properties. Topaz is a silicate mineral with aluminum and fluorine, while zircon is a mineral with zirconium silicate.
The chemical formula of mannose is C6H12O6.
The chemical formula of ethanal (acetic aldehyde) is CH3CHO.
The chemical formula of cysteine is HO2CCH(NH2)CH2SH.