Question

how did you come up witg the listed importance of elements you have written in the table​

Answer 1

Answer:

Within each element square, information on the element's symbol, atomic number, atomic mass, electronegativity, electron configuration, and valence numbers can be found. At the bottom of the periodic table is a two row block of elements that contain the lanthanoids and actinides.

Answer 2

• Chemists have long worked to establish the elements in a manner that the correlations in their properties are highlighted.
• Previously, scientists attempted to order the elements using relative atomic masses.
• That was attributable to a failure to develop the understanding of atoms made up of smaller subatomic particles (protons, neutrons, and electrons).
• Yet, the core of the modern periodic table was well documented even before the concept of the atomic number was devised, and it was used to foresee the properties of new elements.
• When asked who developed the periodic table, most chemists will almost invariably reply to Dmitri Mendeleev.
• Mendeleev was undoubtedly the first to publish a version of the table that we currently know.