Sapphire ndi kristalo limodzi la alumina, ndi gawo la tripartite crystal system, hexagonal structure, crystal yake imapangidwa ndi maatomu atatu a okosijeni ndi ma atomu awiri a aluminiyamu mumtundu wa covalent bond, wokonzedwa bwino kwambiri, ndi unyolo wamphamvu womangira ndi mphamvu ya lattice, pamene crystal in...
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