Question

write something about modern periodic table.

Answer 1

✍️✍️ANSWER ✍️✍️


*️⃣The modern periodic table was proposed by Neil's Bohr.
*️⃣it is known as long form of periodic table.
*️⃣the element is arranged in the order of increasing atomic number in horizontal rows .

Answer 2

• You know why they call it the periodic table? It's because the rows are called periods
• The dreaded Periodic Table on your classroom wall is actually a giant cheat sheet. Dmitry Mendeleev, the creator of the table, was late in submitting his work on all 63 elements. In order to rush things, he made a database of all the elements according to their atomic weights
• There are 118 confirmed elements in the periodic table. Among those, 90 elements can be found in nature, others are strictly man-made. Technetium was the first man-made element
• Hydrogen is the lightest element with its atomic weight 1 and that is why it can be found in the top left corner of the periodic table