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barxatty [35]
3 years ago
11

Help me please i need it for homework i cant seen to solve the answer :((

Chemistry
1 answer:
strojnjashka [21]3 years ago
7 0
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Hydrogen, oxygen, and chlorine are some of the ___ elements
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diatomic, non-metal

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Did education decline during the Renaissance
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This problem is honestly, very easy. Just grab a periodic table and find the element in Group 1 and Period 7. But first, let's discuss how the elements are arranged systematically in a periodic table. There are a lot of scientists who contributed to it, but the most famous one is Dimitri Mendeleev. He arranged the elements according to their atomic number. The elements starts from 1 which is Hydrogen up to the heaviest known elements which is Oganesson with an atomic number of 118. As you can observe, there is a gap between groups 3 and 4. This is done so that the periodic table does not take too much space horizontally. Thus, they are just placed at the bottom. These elements are called lanthanides (upper row) and actinides (lower row). The rows in the periodic table are called groups, and the columns are called periods.

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tiny-mole [99]
The anwer would be salts
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Which of the molecules below must be shown with resonance structures?
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It seems that you have missed the given options for this question, but anyway, the correct answer is NONE OF THE ABOVE. None of the molecules given must be shown with resonance structures. A resonance structure is defined as the way or presenting <span>delocalized electrons within certain molecules or polyatomic ions. This bonding cannot be expressed by one single Lewis </span><span>structure. Hope this answer helps.</span>
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