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Cloud [144]
3 years ago
10

A fluorine ion has 9 protons and a charge of –1. How many electrons are in an ion of fluorine?

Chemistry
2 answers:
Katyanochek1 [597]3 years ago
5 0
A is correct i hope this helps.
Yuliya22 [10]3 years ago
4 0
Its D because it is a negative charge, not a positive just took the test made 100
 
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Why does oxygen exist as a diatonic molecule and not simply the O atom
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Answer:

Oxygen exists as a diatomic molecule in nature when it is not combined with any other element. It forms O2 molecule because it is stable when it is uncombined. It has the lowest energy level when uncombined. ... By achieving octet configuration, the diatomic elements become more stable compared to the single atom.

Explanation:

plsssss.... Mark me as the brainliest

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2 years ago
Emily wanted to see what battery lasted the longest. She put each battery into a clock and recorded the time that the clock stop
Andru [333]

Answer:

independent variable -- different batteries

dependent variable -- the time that clock stop

Explanation:

In an experiment or a research study, there are two type of variables that can affect the result of the experiment or the conclusion. They are independent variable and the dependent variable.

An independent variable may be defined as that variable in an experiment which can be changed or can be controlled in the scientific experiment in order to test the effect on the dependent variable. It cannot be changed by other variables.

On the other hand, dependent variable are those are those which can be altered or change that can affect the experiment.

In the context, Emily uses  the different types of the batteries as an independent variable and the time where the clock stopped in the dependent variable in her research.

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im pretty sute the answer would be number 4.

mark brainliest  :)

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6. This part of Earth's atmosphere blocks the sun's harmful rays. (4 points)
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