Hard water contains relatively large concentrations of A. Magnesium ions
B. Calcium ions
C. Iron ions
D. All of these ions

State two physical properties of ionic compound

Which orbitals form a pi bond? a.the s orbital and three p orbitals b.the s orbital and two p orbitals c.overlapping p orbitals d.overlapping hybrid orbitals

Which feature do highland climates have that lower elevation areas do not?