Atoms & Hydrogen Spectrum

_____________________ is the lowest energy level an electron will occupy in an atom at an ordinary condition

If energy is supplied, electron ___________ the energy and is _____________ from a lower energy level to a higher ones.

Bohr's model answered the problem in Rutherford's model that

• electrons are not spinning at all

• electrons are spaced

• electrons are free to move around the nucleus

• spinning electrons will eventually lose energy and collides to the nucleus

Any energy absorbed by an electron causes it to have to higher energy level

• True

• False

A certain photon of light has a wavelength of 4.22x10^-7nm. What is the frequency? (v=c/λ)

• 7.11x10¹⁴ Hz
• 7.11Hz
• 1.41x10^-15
• -1.41x10¹⁵

According to Ernest Rutherford, an atom is made of mostly....

• empty space
• electrons
• the nucleus
• protons

If an electron moves from n=4 to n=2 it ____

• absorbs energy

• releases energy

The energy of an electron in the nth energy state is ............ eV.

The ionisation energy for hydrogen atom is ........................

Lyman series lies in ......................... part of electromagnetic spectrum.