Q274
Which of the following statements are correct? 1. There are 18 elements in the fourth and fifth period. 2. The seventh period is incomplete with 33 elements. 3. The sixth period has 32 elements.
A.
1 and 2
B.
2 and 3
C.
1, 2 and 3
D.
1 and 3
AnswerAnswer: Option D
Solution
Answer: Option D
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