When atoms of the hypothetical element X are placed together

When atoms of the hypothetical element X are placed together, they rapidly undergo reaction to form the X₂ molecule:

Hopefully you can see the images if not it has a spare circle with a M in it and three spares with M+. Then if you can\'t see b image it has a spare circle with X and three spares with X- in it. Hopefully you can help me out please.

Solution

a) last one

reason : Generally cations have lesser number of shells and higher effective nuclear charge and so they are smaller than that of its neutral atom.

b) last one

reason: Anion has more negative electrons in its outer most orbit than that of its neutral atom and so strong enter electronic repulsion expads its size.

c) M+X ----> MX

d) Ionic compound

reason: since it is a compound is a chemical compound in which ions are held together by ionic bonds

e) representation is not given

9.24

a) exothermic

reason: on formatio of bond energy is released.

b) bond energy is the energy required to break the bond

so it will be positive.

c)+500KJ/mol

d) ?H = -2*1500 + 500+ 750 = -1750 KJ/mol

e) 400 - 525 + 100 = -25 i.e -ve

no ionic compound will be form

f)400 - 525 + L.E = 0

minimum L.E = 125 KJ/mol