What did Mendeleev do for the periodic table GCSE?

Mendeleev arranged the elements in order of increasing relative atomic mass . When he did this he noted that the chemical properties of the elements and their compounds showed a periodic trend .

How do you memorize Mendeleev’s periodic table?

Memorization Strategies

  1. Break down the table into sections.
  2. Spread out the memorization process.
  3. Learn the elements in a song.
  4. Make nonsense words made from element symbols.
  5. Use color to learn element groups.
  6. Use a mnemonic device to help remember the order of the elements.

What was the original revision to Mendeleev’s periodic table?

In 1871, Mendeleev reversed his original arrangement so that the new table lined up elements with similar properties vertically, and periods were in horizontal rows so that the table looks similar the one today.

Why did Mendeleev leave gaps GCSE?

Mendeleev left gaps in his table to place elements not known at the time. By looking at the chemical properties and physical properties of the elements next to a gap, he could also predict the properties of these undiscovered elements.

What were the key features of Mendeleev’s periodic table?

Characteristics of Mendeleev’s periodic table:

  • In Mendeleev periodic table, vertical columns in the periodic table and horizontal row in the periodic table were named as groups and period respectively.
  • The periodic table is composed of seven horizontal rows or periods and is numbered between 1 to 7.

What is the difference between the modern periodic table and Mendeleev?

The main difference between Mendeleev and Modern Periodic Table is that Mendeleev’s periodic table orders the elements based on their atomic mass whereas Modern periodic table orders the elements based on their atomic number.

Why was Mendeleev’s table incorrect?

In devising his table, Mendeleev did not conform completely to the order of atomic mass. He swapped some elements around. (We now know that the elements in the periodic table are not all in atomic mass order.)

What is Eka Aluminium and Eka silicon?

Eka prefix means that element occuring after suffix atom. Means Eka aluminium is Gallium. And Eka silicon is Germanium.