The second element always ends in the -ide because it is named with the root+ide when they bond together.
If its in the shape of a sphere its volume is 696.909703 or 697 cubic mm to the nearest cubed mm.
Answer:
Atomic Mass: 78.96 amu. Melting Point: 217.0 °C (490.15 K, 422.6 °F) Boiling Point: 684.9 °C (958.05005 K, 1264.8201 °F) Number of Protons/Electrons: 34 ... [Bohr Model of Selenium] ... im sorry hope this helped
Explanation: