Map da Chemical Principles 7th Edition Atkins Jones Laverma MHE/Freeman presente
ID: 587781 • Letter: M
Question
Map da Chemical Principles 7th Edition Atkins Jones Laverma MHE/Freeman presented by Sapling Learning wassify each statement as true or false. True False If one face of a unit cell has an atom in If one face of a unit cell has an atom in its center, then the face opposite thatits center, all the faces of the unit cell face must also have an atom at its center. If there is an atom present at the corner type of atom at all corners of the unit cell. must also have atoms at their centers. A unit cell must be defined so that of a unit cell, there must be the same there are atoms at the corners.Explanation / Answer
note: there are two types of unit cells:
there are three types of centered unit cells named as
so using all these divisions and definitions we can conclude:
statement 1( top left one) : TRUE :( FCC, ECC)
statement 2(top right one) : False need not be must but it can be as this restricts unit cells to (only FCC)
statement 3: (bottom left): TRUE ( lattice is made up of same unit cell repeating and in one unit cell the positive and negative ions are kept either on corner or at face but not randomly because it may create unstability of lattice.
statement 4(bottom right ) : True: unit cell is the smallest unit which is repeated and forms lattice. and each category unit cell has atoms at the corners.