Question

When greater number of excited hydrogen atom reach the ground state?

Answer 1

Answer:

When greater number of excited hydrogen atoms reach the ground state ore number of lines are found in Lyman series (b) The intensity of lines in Balmer series increases The intensity of lines in Lyman series increases d) Both the intensity and number of lines in Lyman series increases

Answer 2

Answer:

Explanation:

Instead of looking at how each electron can make the jump(s) through levels, let’s look at how an electron in a given state can make a single jump. This gives us, from your example,

For an electron in the 4th level, we have 3 3 single jump possibility, i.e.  

4 → 3

4 → 2

4 → 1

Similarly,  

3 → 2

3 → 1

And finally,

2 → 1

That gives us a total of 3 + 2 + 1 = 6.