An electron make transition from higher energy orbit (n2) to lower energy orbit (n1) in Li2+ ion suc — AITS & Test Series Chemistry Question

Question

An electron make transition from higher energy orbit (n2) to lower energy orbit (n1) in Li2+ ion such that n1 + n2 = 4 & n2 - n1 = 2. Determine the wavelength emitted in the dimension (in nm) A) 12.9 nm B) 11.4 nm C) 16.7 nm D) 9.2 nm