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Charles Janet’s left-step table. Wikipedia, CC BY-SA Settling on a design The modern table is actually a direct evolution of Janet’s version. The alkali metals (the group topped by lithium) and the ...
The alkali metals burn vigorously when heated and placed in a gas jar of oxygen. The oxide forms as white smoke. For example: sodium + oxygen → sodium oxide 4Na (s) + O 2 (g) → 2Na 2 O (s) ...
GCSE Chemistry (Single Science) Atomic structure and the periodic table learning resources for adults, children, parents and teachers.
X818: Periodic Trends – Alkali Metals in Water Introduction When a small piece of sodium is placed in a petri dish with water and phenolphthalein, the sodium becomes a molten ball and darts around the ...
With that addition the table will do something which has never happened before. It will grow a new row. Come in number 119 An element's atomic number is the number of protons in its nucleus.