Metals are malleable because of weak bonds between atoms. this allows planes of atoms to slide past one another and into new positions. some alloys retain their malleability while others become more rigid. consider the diagrams in model 1.
predict which type of alloy would result in a more rigid substance. justify your reasoning.

Interstitial alloy because the atoms are closely packed in this lattice which will restrict their movement.

Explanation:

Interstitial alloy is a type of alloy formed when an atom of relatively small radius is inserted into an an interstitial “hole” in a metal lattice. The main difference between interstitial and substitutional alloys is that in substitutional alloy, there is the substitution of one metal atom for another similar metal atom while in interstitial alloy, the small metal atoms are inserted into the holes of the metal lattice.  Since in the Interstitial alloy, the atoms are closely packed in this lattice which will restrict their movement, then this type of alloy will form a more rigid substance.

given:

mass of na = 115 g

excess cl2

to determine:

mass of nacl produced

explanation:

given reaction is-

2na(s) + cl2(g) → 2nacl(s)

since cl2 is in excess, na will be the limiting reagent

as per the reaction stoichiometry na: nacl = 1: 1

i.e. moles of na reacted = moles of nacl formed

now, # moles of na = mass of na/atomic mass

                                  = 115 g/23 g.mol-1 = 5 moles

therefore, moles of nacl = 5

molar mass of nacl = 58 g/mol

mass of nacl = 5 moles * 58 g.mol-1 = 290 g

ans: amount of nacl produced = 290 g