The region in the electromagnetic spectrum where the Balmar series lines appear is :

Solution

Chemistry ma’am · 3 steps

Balmer means landing on n = 2, and those jumps give the coloured lines you can actually see.

1. Which series is which. A hydrogen series is named by the lower level the electron falls to. Balmer lines are all jumps that end at n₁ = 2.

   Series	Ends at	Region
   Lyman	n₁ = 1	ultraviolet
   Balmer	n₁ = 2	visible
   Paschen	n₁ = 3	infrared
   Brackett, Pfund	n₁ = 4, 5	infrared

2. Check one line. For the first Balmer line (3 → 2), 1/λ = R_H(1/4 - 1/9) = 5R_H/36. With R_H = 1.097 × 10⁷ m⁻¹, λ ≈ 656 nm, the red line in the 400 to 700 nm visible band.
3. So. The Balmer lines (656, 486, 434 and 410 nm) fall in the visible region, which is option (c).

The idea to keep. Learn the order: Lyman is UV, Balmer is visible, Paschen, Brackett and Pfund are infrared. A larger lower level means a smaller energy gap and a longer wavelength.

Answer from the NTA final answer key. Solution by PrepWiser.