What is the definition of Actinide series in chemistry?

Definition of actinide series : a series of heavy radioactive metallic elements of increasing atomic number considered to be analogous to the lanthanide series and to begin with actinium (89) or thorium (90) and end with element of atomic number 103 — compare actinium series, periodic table.

What is the meaning of actinides in science?

actinoid element, also called actinide element, any of a series of 15 consecutive chemical elements in the periodic table from actinium to lawrencium (atomic numbers 89–103). As a group, they are significant largely because of their radioactivity.

What are actinides give example?

1. The Actinide series contains elements with atomic numbers 89 to 103 and is the third group in the periodic table. Actinium, Thorium, uranium curium are the some example of Actinides series.

What are actinides Class 12?

Actinides consist of elements that follow actinium and involve the filling of 5f subshell . The dominant oxidation state of these elements is +3 (similar to lanthanides). Besides +3 state, they also exhibit +4 oxidation state. Some actinides show still higher oxidation states.

What is a nonmetal definition?

Definition of nonmetal : a chemical element (such as boron, carbon, or nitrogen) that lacks the characteristics of a metal.

Which is actinide element among the following?

Actinoid elements are actinium, thorium, protactinium, uranium, neptunium, plutonium, americium, curium, berkelium, californium, einsteinium, fermium, mendelevium, nobelium and lawrencium .

What is lanthanide and actinide series?

The lanthanide and actinide series make up the inner transition metals. The lanthanide series includes elements 58 to 71, which fill their 4f sublevel progressively. The actinides are elements 89 to 103 and fill their 5f sublevel progressively.

What are Uses of Metalloids?

Metalloids are usually too brittle to have any structural uses. They and their compounds are used in alloys, biological agents, catalysts, flame retardants, glasses, optical storage and optoelectronics, pyrotechnics, semiconductors, and electronics.

What are actinides Class 11?

Actinides. Actinides are elements with atomic numbers from 90 to 103 following element Actinium. They include naturally occurring elements of thorium, protactinium and uranium and eleven transuranic i.e., artificially produced by nuclear reactions.

What are the uses of actinides?

A large number of actinides are used for the defense operations, nuclear weapons and for the production of energy. Plutonium is used in nuclear reactors and for nuclear bombs as well. Many of the actinide elements are used in the nuclear power plant and also for the production of electronic power.

What is meant by Lanthanoids and actinoids?

Lanthanoids: Lanthanoids are chemical elements that can be found in the lanthanide series of the f block in the periodic table of elements. Actinoids: Actinoids are chemical elements that can be found in the actinide series of the f block in the periodic table of elements.