Which chemical element?

Question 1

Discovered by Anders Ekeberg in Sweden in 1802, which transition metal is used in capacitors for mobile phones, DVD-players, and computers?

Answer 1

TANTALUM

Question 2

“Columbium” was the original name for which chemical element, which was re-named in 1949 after its close resemblance to another chemical element?

Answer 2

NIOBIUM