Question

Define the following with example 1 Valency
2 cation
3 Anion
4 Alchemy
5 Variable Valency
6 Radicals
7 Chemical formula

Answer 1

Answer:

• valency is the combining capacity of the atom of an element it is equal to the number of electrons and atoms can not or accept or share
• chemical formula of a compound is a symbol representation of its composition

Answer 2

Explanation:

1.valency:-the combining power of an element, especially as measured by the number of hydrogen atoms it can displace or combine with.

2.cation:-a positively charged ion, i.e. one that would be attracted to the cathode in electrolysis.

3.anion:-a negatively charged ion, i.e. one that would be attracted to the anode in electrolysis

4. Alchemy:-the medieval forerunner of chemistry, concerned with the transmutation of matter, in particular with attempts to convert base metals into gold or find a universal elixir.

"occult sciences, such as alchemy and astrology"

5varialbe valency:-In transition elements, an atom loses electrons from the shell next to the valence shell (penultimate shell). In such a situation the element exhibits more than one valency (variable valency).

6.radicals:- group of atoms behaving as a unit in a number of compounds.

7.chemical formula:-a set of chemical symbols showing the elements present in a compound and their relative proportions.

noun: chemical formula

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