QQuestionChemistry
QuestionChemistry
Find a way for elements that have atomic numbers that add up to 200. The elements must include Kr, V, and VII.
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Answer
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Step 1:: Write down the atomic numbers of the given elements.
The atomic number of Kr (Krypton) is 36, V (Vanadium) is 23, and I (Iodine) is 53.
Step 2:: Determine how many more atoms are needed to reach a total of 200.
We are given three atomic numbers: 36 (Kr), 23 (V), and 53 (I). To find out how many more atoms we need, subtract the sum of these atomic numbers from 200: 200 - (36 + 23 + 53) = 200 - 112 = 88
Step 3:: Find the missing atomic number(s) to reach a total of 200.
Since we need to reach 200 and have already accounted for 112, we need to find elements with atomic numbers that add up to 88. We can look for these elements in the periodic table. After checking the periodic table, we find that the missing elements are Br (Bromine) with an atomic number of 35 and Sr (Strontium) with an atomic number of 38.
Step 4:: Verify that the atomic numbers add up to 200.
Add up all the atomic numbers: 36 (\text{Kr}) + 23 (\text{V}) + 53 (\text{I}) + 35 (\text{Br}) + 38 (\text{Sr}) = 200
Final Answer
The elements that have atomic numbers that add up to 200 and include Kr, V, and I are Kr, V, I, Br, and Sr.
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