Examlex
In a qualitative cation analysis,the unknown ion is not precipitated by HCl or H2S,but is precipitated by CO32-.The unknown ion is ________.
Wilhelm Roentgen
The German physicist who discovered X-rays in 1895, an achievement for which he was awarded the first Nobel Prize in Physics in 1901.
X-rays
A form of electromagnetic radiation with wavelengths shorter than ultraviolet light, capable of penetrating solids and used in medical imaging.
Discovered
The act of finding or uncovering something that was previously unknown or hidden.
Electroplating
The act of depositing the atoms of one type metal onto another.
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