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makayladurham19
27.06.2019 •
Chemistry
Pls hlp me with these questions: brainliest, ratting, thx, etc.
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Ответ:
2 they have same number of valence electrons
3 period
Ответ:
Explanation:
Let recall the crystal structure of CsBr obtains a BCC structure. In a BCC structure, there exist only two atom per cell.
The density d of CsBr in g/cm³ can be calculated by using the formula:
where;
z = 1 mole of CsBr
edge length = 428.7 pm = (4.287 × 10⁻⁸)³ cm
molar mass of CsBr = 212.81 g/mol
avogadro's number = 6.023 × 10²³