Science Daily

High Pressure Yields Novel Single-element Boron 'Compound'

Scientists have found the first case of an ionic crystal consisting of just one chemical element -- boron. This is the densest and hardest known phase of this element. The new phase turned out to be a ...
BBC

Calculations for all students - Edexcel

\({\%~of~an~element} = \frac{mass~of~an~element~in~the~compound}{relative~formula~mass~M_r} \times 100\) There are six atoms of hydrogen in the compound, so the mass ...
BBC

Chemistry calculations - Edexcel Finding the % of an element in a compound by mass

\({\%~of~an~element} = \frac{mass~of~an~element~in~the~compound}{relative~formula~mass~M_r} \times 100\) There are six atoms of hydrogen in the compound, so the mass ...
Chemistry World

First x-ray structure of radium compound gives glimpse of element’s coordination chemistry

A team at Oak Ridge National Laboratory (ORNL) in the US has reported the first synthesis and characterisation of a molecular radium compound by single crystal x-ray diffraction. The findings reveal ...