According to Newland’s Law of Octaves, every eighth element has properties similar to those of the first element. Which of the following elements has properties similar to those of N?

Explanation

In Newlands’ octave arrangement, nitrogen and phosphorus occupy corresponding positions in successive rows and have similar chemical properties. The historical sequence omits the noble gases that were not yet known. Counting these historical positions is different from simply adding 8 to nitrogen’s modern atomic number.