In Mendeleev's periodic table, the element with a mass number of 31 would have been called eka-_____.

Question

Quizplus · Accepted Answer

Mendeleev named undiscovered elements by prefixing the Sanskrit word "eka" to the name of the element directly above the undiscovered one in his periodic table. The element with a mass number of 31 is phosphorus, which is directly below nitrogen in the periodic table, hence it would have been called eka-nitrogen.

In Mendeleev's Periodic Table, the Element with a Mass Number