Ok since I took chemistry back in middle school, I'll tell you #1: Lanthanum and Actinium are the beginning elements of the Actinide and Lanthanide series, that's why the series is named after them #2: They are chemically arranged differently (Ex:The # of protons and neutrons and electrons) #3 If they were in the series, why would the series be named after them? Hope this helped!
Lanthanum and lutetium: lantanides group Actinium and lawrentium: actinides group
Actinuim is a member of the family of actinides.
The lanthanide and actinide series. Trait of lanthanide: Lanthanum, element 57. Trait of actinide: actinium, element 89.
Lanthanum (La) and actinium (Ac) are two chemical elements, solid metals.
La - Lanthanum Ac - Actinium
Elements La(Lanthanum)-Lu(Lutetium) are the lanthanides. Elements Ac(Actinium)-Lr(Lawrencium) are the actinides.
Lanthanum and lutetium: lantanides group Actinium and lawrentium: actinides group
Actinuim is a member of the family of actinides.
Actinuim is a member of the family of actinides. Actinium is a solid metal, radioactive with the atomic number 89.
The lanthanide and actinide series. Trait of lanthanide: Lanthanum, element 57. Trait of actinide: actinium, element 89.
Lanthanum (La) and actinium (Ac) are two chemical elements, solid metals.
After the IUPAC nomenclature lanthanum is a lanthanoid and actinium is an actinoid.
La - Lanthanum Ac - Actinium
K. W. Bagnall has written: 'Lanthanides and actinides' -- subject(s): Actinide elements, Rare earth metals 'Chemistry of the rare radioelements: polonium-actinium' -- subject(s): Actinium, Polonium, Radiochemistry
Lanthanum and actinium have different properties. So, they are kept apart from the periodic table.
The actinide series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium through lawrencium. There are two rows below the periodic table, the first row is lanthanides and the second row is actinides.
Lanthanum and Actinium