Which of the following elements was predicted by Mendeleev in 1869 before its discovery in 1875 in France (Gallia)?

Question

Quizplus · Accepted Answer

Mendeleev left gaps in his periodic table for elements he predicted would exist but had not yet been discovered. Gallium (Ga) was one of these predicted elements, and it was discovered in France in 1875. Ge (Germanium) was also predicted by Mendeleev and discovered in 1886, but Sc (Scandium) was discovered in 1879 by Lars Fredrik Nilson and was not predicted by Mendeleev. Therefore, the correct answer is A) Ga.

Which of the Following Elements Was Predicted by Mendeleev in 1869