Which statements is true about electrons in their energy levels
1 answer:
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Answer: (3) silicon
Explanation:
Element is a pure substance which is composed of atoms of similar elements.It can not be decomposed into simpler constituents using chemical reactions.Example: Silicon (Si)
Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.It can be decomposed into simpler constituents using chemical reactions. Example: ethane , propanone
and water
Answer:
Explanation:
T = 0.436.
I used the formula for first order reaction.
I hope you get this.