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kramer
3 years ago
9

Look at the two question marks between zinc (Zn) and arsenic (As). At the time, no elements were known

Physics
1 answer:
marissa [1.9K]3 years ago
6 0

Answer:

Mendeleev predicted the atomic mass of each element along with compounds they each should form.

Explanation:

Based on other elements in the same group he predicted the existence of eka-aluminum and eka-silicon, later to be named gallium (Ga) and germanium (Ge).

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