Chemistry, asked by raibishal3147, 5 months ago

Who proposed the law of conservative of mass? what is the valency of an element with atomic number 20?​

Answers

Answered by sanjayraibole1
0

Answer:

1) Antoine Lavoisier's

2) Basically the Element having the atomic number 20 is the CALCIUM thus it has 2 electrons in its valence shell. CALCIUM is Electropositive in nature

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