taquanhamilton68
25.02.2020 •
Social Studies
Does it matter that Groupon reported its weakness in internal controls as a disclosure control under SOX Section 302 rather than pointing it out in its report on internal controls under Section 404
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Ответ:
All the given elements belong to the second period of the periodic table
Explanation:
Let's locate the elements with the given atomic numbers:
Z = 3, this corresponds to lithium (Li);Z = 4, this corresponds to beryllium (Be);Z = 5, this corresponds to boron (B);Z = 6, this corresponds to carbon (C);Z = 7, this corresponds to nitrogen (N);Z = 8, this corresponds to oxygen, (O);Z = 9, this corresponds to fluorine, (F).Now notice that each of these 9 elements can be found in the same row of the periodic table. This is period 2. We may then summarize that all of these elements belong to the same period, period number 2.