Which pair of ions can form an ionic bond with each other and why?
a) cu+ and ag+; they are both metal ions.
b) s2- and o2-; they have like charges.
c) br- and at-; they are both halogen ions.
d) li+ and br-; they have unlike charges.

The answer is D) Li+ and Br-; They have unlike charges. because opposite charges are attracted to each other and want to bond, the term ionic actually refers to the making of ions which happen when electrons are lost and gained, and only the ions that have opposite charges will want to bond.

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer