Quantum Theory

Choose the correct order for the electromagnetic spectrum by the increasing of wavelength

• Infrared, Microwave, Radio wave, Visible spectrum, Gamma ray, X-ray, Ultraviolet

• Radio wave, Microwave, Infrared, Visible spectrum, Ultraviolet, X-ray, Gamma ray

• Gamma ray, X-ray, Ultraviolet, Visible spectrum, Infrared, Microwave, Radio wave

• Visible spectrum, Radio wave, Microwave, Infrared, Utraviolet, X-ray, Gamma ray

Answer explanation

Rosmah Mansur Ikut Viola Untuk Xtra Glamour

Radio Micro Infrared Visible Ultraviolet Xray Gamma

Sodium emits light at wavelength 700 nm, what is the colour of the light?

• Blue

• Red

• Green

• Yellow

What is CORRECT to maximize the kinetic energy in photoelectrik effect

• Decrease wavelength

• Energy of photon should equal to the binding energy of electron in metal

• Decrease frequency

• Increase the light intensity

What is CORRECT about Bohr's postulation on atomic model

• Radius of orbit decrease as n increase and is inversely proportion to n2

• The energy of the electron orbiting the nucleus in an orbit is quantized

• Electron emit energy when excited and and absorb energy when fall back down

• The electron move in circular orbit and sometimes spiral into nucleus

What is the CORRECT order?

• Bracket, Paschen, Lyman, Balmer

• Paschen, Lyman, Balmer, Bracket

• Lyman, Paschen, Balmer, Bracket

• Lyman, Balmer, Paschen, Bracket

What is NOT the correct experiment that conclude light is photon?

• Blackbody radiation

• Photoelectric effect

• Newton's light spectrum experiment

• Line spectra

What is the correct order for set of quantum number?

• (n,l,ml,ms)

• (l,n,ml,ms)

• (n,l,ms,ml)

• (ms,ml,l,n)

What is the electronic configuration for Sodium?

• 1s2 2s2 2p6 3s2

• 1s2 2s2 2p6 3s1

• 1s2 2s2 3s1 2p6

• 1s2 2s2 2p4 3s3

What is NOT the correct principle and rule is writing electronic configuration?

• • Aufbau principle

• • Pauli exclusion principle

  
  

• • De Broglie principle

  
  

• • Hund's rule

  
  

• Group 2, Period 4

• Group 2, Period 5

• Group 17, Period 5

• Group 1, Period 4