what are inner transition elements? why are they so called ? how many series of inner transition elements are present in the modern periodic table? write their names and atomic number which of these two series contains only radioactive elements? name any three radioactive elements which are used in atomic bombs
Answers
Answer:
The elements which follow lanthanum (Z=57) and actinium (Z=89) are called the lanthanides and actinides, respectively, and together are known as the inner transition elements.
Explanation:
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Answer:
Transition Metal (chemical element)
The first of the inner transition series includes the elements from cerium (symbol Ce, atomic number 58) to lutetium (symbol Lu, atomic number 71). These ...
The periodic table from the article Periodic Table
A number of the elements of each long period are called the transition metals. These are usually taken to be scandium, 21, to zinc, 30 ...
periodic table (chemistry)
The periodic table is a tabular array of the chemical elements organized by atomic number, from the element with the lowest atomic number, hydrogen, to ...
Carbon Group Element (chemical elements)
In the periodic table, the elements with eight electrons outermost form the group known as the noble gases (Group 18 [0]), the least reactive of ...
Mendeleyev’s periodic law from the article Chemistry
The widespread adoption of a single reformed set of atomic weights for the 60-odd known elements appears to have prompted renewed speculation on the relationships ...
Periodic arrangement and trends from the article Chemical Bonding
The columns of the periodic table, which contain elements that show a family resemblance, are called groups. All members of a particular group have analogous ...
Atomic Number (physics)
Atomic number, the number of a chemical element in the periodic system, whereby the elements are arranged in order of increasing number of protons in ...
Chemical Compound
The different abilities of the various atoms to combine to form compounds can best be understood in terms of the periodic table. The periodic table ...
Radioactivity and the transmutation of elements from the article Physical Science
Using these rules, Rutherford and his colleagues could determine the atomic numbers and atomic weights of many substances formed by radioactive decay, even though the ...
Thermal properties from the article Rock
Some elements, or their isotopes (nuclear species with the same atomic number but different mass numbers), decay with time. These include elements with an atomic ...