Chemistry, asked by shine2249, 8 months ago

besides gallium,which two other elements have since been discovered for which Mendeleev had left gaps in his periodic table

Answers

Answered by Anonymous

2

Answer:

Gallium and Scandium.

Li Na K

6.939 22.99 39.102

Average atomic mass of Na= 2

6.939+39.102

=23.0205

It is close to 22.99 which is less than actual mass.

Explanation:

Answered by pallavikokate2020

1

Answer:

Germanium, Scandium.

Explanation:

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