Limiting line of balmer series result when electron jumps from orbitImmersive Reader A) 3 to 2
B) ∞ to 2
C) 4 to 5
D) ∞ to 1

A) 3 to 2

Explanation:

The Balmer series refers to all transition series of spectral emission lines of the hydrogen atom in which an electron moves from any higher energy level within the atom down to the energy level with principal quantum number n=2.

The Balmer series was originally calculated using the Balmer formula, this is an empirical equation first deduced by Johann Balmer in 1885.

Hence, a transition from n=3 level to n=2 level is in the Balmer series.

given:

mass of na = 115 g

excess cl2

to determine:

mass of nacl produced

explanation:

given reaction is-

2na(s) + cl2(g) → 2nacl(s)

since cl2 is in excess, na will be the limiting reagent

as per the reaction stoichiometry na: nacl = 1: 1

i.e. moles of na reacted = moles of nacl formed

now, # moles of na = mass of na/atomic mass

                                  = 115 g/23 g.mol-1 = 5 moles

therefore, moles of nacl = 5

molar mass of nacl = 58 g/mol

mass of nacl = 5 moles * 58 g.mol-1 = 290 g

ans: amount of nacl produced = 290 g