3 years ago

How does the number of valence electrons in an atom relate to the elements placement on the periodic table?

1 answer:

8 0

If the number of valence electron is one than it will be placed in group IA. elements of group IIA will have two valence electrons and so on....

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Gnom [1K]

Answer:

Make an observation.

Ask a question.

Form a hypothesis, or testable explanation.

Make a prediction based on the hypothesis.

Test the prediction.

Iterate: use the results to make new hypotheses or predictions.

Explanation:

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2 years ago

Ad libitum [116K]

Answer:

Hb would be 78.4% saturated.

Explanation:

This problem can be solved by using simple unitary method.

At 100 mm Hg pressure of oxygen, Hb is saturated by 98%

So, at 1 mm Hg pressure of oxygen, Hb is saturated by $\frac{98}{100}$ %

Hence, at 80 mm Hg pressure of oxygen, Hb is saturated by $\frac{98\times 80}{100}$ % or 78.4%

Therefore, at 80 mm Hg pressure of oxygen in the lungs, Hb would be 78.4% saturated.

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2 years ago

Sophie [7]

The answer would be B, an electron because the proton is positive, neutron is neutral, and the nucleus is the center of the atom.

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2 years ago

ale4655 [162]

Answer:

H2O

Explanation:

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2 years ago

igor_vitrenko [27]

D. melting ice on roads and sidewalks, i think

6 0

2 years ago