Seudónimo Seudónimo

14-11-2020
Chemistry

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Please help me out with these questions please..

Both are in 1 picture:)

Please help me out with these questions please Both are in 1 picture class=

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nguyenvina226 nguyenvina226

14-11-2020

Answer:

1. B

2. C

Explanation: The law that the properties of the elements are periodic functions of their atomic numbers. And the second one is, most of the air we breathe is made of oxygen.

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peterlegends12 peterlegends12

14-11-2020

The first Answer is A and the second is B

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