Question

Atomic Structure
Sodium has atomic number 11 and
atomic weight 22.989769 u. Find out
the number of electrons, protons
and neutrons in its atom.
The wavelength of red light is 750
nm. Calculate the frequency &
wavenumber
L
Calculate the energy of Quantum
associated with light of wavelength
6057.8 Angstrom (Angstrom = 10-8
cm)
L​

Answer 1

Explanation:

1. Sodium has 11 protons, so with 12 neutrons, that atomic mass is 23 for that isotope.

2. Red light has a wavelength of ~700 nm, and a frequency of ~4.3*1014 Hz.

3. sorry i dunno!