Why are lanthanides and actinides separated?
The reason why Lanthanides and Actinides are located at the bottom of the periodical table is because of their properties and in the block in which electrons fill up. The reason why inner-transition metals are located at the bottom of the periodic table, separated from the rest is because they all fill the f-block.
Why are the elements in Group 0 so unreactive?
When elements react, their atoms complete their outer shells by losing, gaining, or sharing electrons . Atoms of group 0 elements already have stable arrangements of electrons. This means that they have no tendency to lose, gain, or share electrons. This is why the noble gases are unreactive.
Which group has no group reagent?
sodium hydroxide
Is Group 4 anions or cations?
Group 4 Common anions, which do not react with reagents of the previous groups, form the last group of anions, which includes nitrite, nitrate and chlorate ions.
What is the group reagent?
The “Group reagent” is a cocktail of reagents that serves as a prima facie indication of a particular cation, characterized by the formation of a precipitate during a positive test/result and no precipitation in the event of a negative test/result.
What is the group reagent of 2nd group?
concentrated sulphuric acid
Why anions are called acid radicals?
Cation and anion are called basic and acidic radicals, respectively, because during salt formation cation comes from base and anion comes from acid.
How many types of acid radicals are there?
Negatively charged radicals are called acidic radicals. Positively charged radicals are called a basic radical. Acid radicals are formed by removal of hydrogen ion (H+).
What is called radical?
Radical, also called Free Radical, in chemistry, molecule that contains at least one unpaired electron. Most molecules contain even numbers of electrons, and the covalent chemical bonds holding the atoms together within a molecule normally consist of pairs of electrons jointly shared by the atoms linked by the bond.