Plumbous ion is represented as__________

Mercurous ion is represent as

An element M has atomic mass 19 and atomic number 9 . Its ion is represented as

Restarting a computer that is already on is referred to as__________

An element M has an atomic mass 19 and atomic number 9. Its ion is represented by

An element M has an atomic mass 19 and atomic number 9 . Its ion is represented by

In NaCl ionic crystal, each Na^(+) ion is surrounded by __________ Cl^(-) ions and cach Cl^(-) ion is surrounded by __________ Na^(+) ions.

When four or more halogen atoms are attached to an aromatic ring, the compound is classified as__________.

For the reaction , A_((s))+3B_((g))to 4C_((s))+D_((l)). DeltaH "and" DeltaU are related as__________.