Use the information extracted from the periodic table in Figure 2.2 to answer the following questions.
-The atomic number of each atom is given to the left of each of the elements below. Which of the atoms has the same valence as carbon ( C) ?
A) ?nitrogen
B) ?flourine
C) ¹?neon
D) ¹²magnesium
E) ¹?silicon
Correct Answer:
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Q18: About 25 of the 92 natural elements
Q19: One difference between carbon-12 (
Q20: Which of the following best describes
Q21: Please refer to Figure 2.1 to answer
Q22: Please refer to Figure 2.1 to answer
Q24: Please refer to Figure 2.1 to
Q25: Use the information extracted from the periodic
Q26: Use the information extracted from the periodic
Q27: Please refer to Figure 2.1 to
Q28: Use the information extracted from the periodic
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