Which of the following statements in not correct about Lother Meyer's classification in the form of curve?

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1.
Which of the following statements in not correct about Lother Meyer's classification in the form of curve?

1. The elements present at the peaks are chemically very active2. Alkaline earth metals are present at the descending positions of the curve3. Halogens occupy ascending position of the curve4. None of these

Which of the following statements in not correct about Lother Meyer's classification in the form of curve?