The ions formed by nonmetals in group 6A and 7A...

A: have a numerical charge that is found by subtracting the group number from 8

B: have a numerical charge that is found by subtracting 8 from the group number

C: all have a numerical charge of -1

D: i’ll have a name that ends in -ate

The lattice enthalpy (formation of ionic solid from ions in the gas phase) for agcl(s) is -916 kj/mol and the hydration enthalpy (dissolution of gaseous ions into water) is -850 kj/mol. how much heat (in joules) is involved in forming 1l of saturated agcl solution (1.8 × 10-4 g / 100 ml water) by dissolving agcl(s)? assume solution volume does not change much upon dissolution. the equations are given below. ag+(g) + cl−(g) æ agcl(s)