Question

Answer plese......................​

Answer 1

Answer:

1=^]]] The periodic table is the most important chemistry reference there is. It arranges all the known elements in an informative array. Elements are arranged left to right and top to bottom in order of increasing atomic number. Order generally coincides with increasing atomic mass.

2_-In atomic physics and quantum chemistry, the electron configuration is the distribution of electrons of an atom or molecule (or other physical structure) in atomic or molecular orbitals. ... This is also useful for describing the chemical bonds that hold atoms together.

1. A valence electron is a negatively charged particle, located in the outermost shell of an atom, that can be transferred to or shared with another atom. Valence (or valency) is an atom or group of atoms' ability to chemically unite with other atoms or groups.

Answer 2

Hey Mate!!

1) Write some importance of periodic table.

Ans ; To summarize, the periodic table is important because it is organized to provide a great deal of information about elements and how they relate to one another in one easy-to-use reference. The table can be used to predict the properties of elements, even those that have not yet been discovered.

2) What do you mean by Electronic configuration of atom?

Ans ; In atomic physics and quantum chemistry, the electron configuration is the distribution of electrons of an atom or molecule (or other physical structure) in atomic or molecular orbitals. ... This is also useful for describing the chemical bonds that hold atoms together.

3) What do you understand by Valence

electron and Valency?

Ans ; Valence Electron ;

A valence electron is a negatively charged particle, located in the outermost shell of an atom, that can be transferred to or shared with another atom. ... Valence electrons, then, are electrons in the outermost shell of the atom that determine an atom's or group's ability to bond with others.

Valency ;

Valency is the combining power of an element. Elements in the same group of the periodic table have the same valency. The valency of an element is related to how many electrons are in the outer shell.

Hope this helps you!!