Three statements are false. All four statements are false. The most metallic elements have the lowest ionization energies. Two statements are true. Three statements are true.
All statements are true.
The mass of one mole of carbon is equal to the mass of one mole of lead. A mole is an amount of substance containing Avogadro's number of unit particles. The transition elements are those elements in which the d-orbitals are being filled. The lanthanides correspond to the filling of the 4f orbitals. Two statements are false.