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aleksley [76]
2 years ago
7

Why does a new period start on the periodic table, instead of the row continuing? A. A new period starts when a new energy shell

starts. B. A new period starts when a new neutron cycle starts. C. None of these D. It is based on how many protons it has.
Chemistry
1 answer:
Allushta [10]2 years ago
8 0

Answer:

B

Explanation:

All the elements in a period have valence electrons in the same shell. The number of valence electrons increases from left to right in the period. When the shell is full, a new row is started and the process repeats.

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Answer:

The empirical formula is the simplest form;

Given:

Oxygen O at 94.1% and

H at 5.9%

Assume 100grams.

94% = 0.941 x 100gm. = 94.1 gm x 1mole/16gm. = 5.88 moles of O

5.9% = 0.059 x 100gm. = 5.9gm. X 1moleH/1.002gm. = 5.88 moles of H

There is one mole of O for each mole of H so the empirical formula is O_1H_1

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2 years ago
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Which of the following is the correct name for MgCI?
kupik [55]

Answer:

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Explanation:

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