Atomic mass Boiling point Initial letter 2 . What property is used in the modern periodic table to sort the elements? Atomic number Mass number Boiling point Initial letter 3 . Group 1 elements are called... transition metals noble gases ...
3.3 The Atom. Periodic Table of Elements Atomic Number: Number of protons in an atom; usually appears directly above the chemical symbol. Number of protons. 2. What are isotopes? Use two particles from the table above to illustrate your answer. (3 marks) 17 O & 18 O (1) Same Atomic ...
Who invented the Periodic Table? The Periodic Table was invented byDmitri Mendeleevin 1869, who was the first scientist to put elements in order of atomic mass. Mendeleev was so clever at spotting patterns he left gaps for undiscovered elements. The modern periodic table is slightly different to...
Nobel Gases Write the words Noble Gases on the eighth tab of your foldable. Include the groups 18 and 8A on the bottom of the eighth tab. Nobel Gases -Write the following information on the inside of the eighth tab. All non metals Full outer shell Non-reactive Do not “mix” with othe...