Question

what is periodic table?????​

Answer 1

Answer:

The periodic table is a tabular array of the chemical elements organized by atomic number, from the element with the lowest atomic number, hydrogen, to the element with the highest atomic number, oganesson. The atomic number of an element is the number of protons in the nucleus of an atom of that element.

Answer 2

who is the founder of periodic table?

Answer:Dmitri medeleev

• Dmitri Ivanovich Mendeleev was a Russian chemist and inventor. He is best remembered for formulating the Periodic Law and creating a farsighted version of the periodic table of elements.
• Dmitri Mendeleev devised the periodic classification of the chemical elements, in which the elements were arranged in order of increasing atomic weight.
• Dmitri Mendeleev's parents were Ivan Mendeleev, a teacher, and Mariya Kornileva. Ivan went blind in 1834, the year Dmitri was born, and died in 1847. Mariya then ran a glass factory. However, the factory burned down in 1848, and Dmitri moved to St. Petersburg to continue his education.

what is a periodic table?

Answer:chemical elements, which are arranged by atomic number, electron configuration, and recurring chemical properties.

• In 1869 Russian chemist Dimitri Mendeleev started the development of the periodic table, arranging chemical elements by atomic mass. He predicted the discovery of other elements, and left spaces open in his periodic table for them. ... Thomson first discovered electrons; small negatively charged particles in an atom.
• There are nine basic groups of elements shown in the periodic table. They are the alkali metals, alkaline earth metals, transition metals, other metals, metalloids, non-metals, halogens, noble gases and rare earth elements.
• Major periodic trends include: electronegativity , ionization energy , electron affinity , atomic radius , melting point, and metallic character . Periodic trends, arising from the arrangement of the periodic table, provide chemists with an invaluable tool to quickly predict an element's properties

hope this helps you.