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प्रश्न
The particle not present in an ordinary hydrogen atom is :
विकल्प
proton
neutron
nucleus
electron
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उत्तर
neutron
A hydrogen atom ` ""_1^1"H"`, has 1 proton and 1 electron, but it does not have any neutron.
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संबंधित प्रश्न
Give the following a suitable word/phrase.
The sum of the number of protons and neutrons of an atom.
What are the two main parts of which an atom is made of?
FILL IN THE BLANK
Gases become good conductors of electricity under ........ (low/high) pressure and .............. (low/high) voltage electrical discharge.
FILL IN THE BLANK
The γ-rays are............................ radiations, like light.
Tick the most appropriate answer.
Which of the following scientists observed that cathode rays consists of negatively charged particles?
- John Dalton
- J J Thomson
- James Chadwick
- Democritus
WRITE SHORT ANSWER
What is the number of neutrons present in a potassium atom ?
Draw the electronic configuration of the following elements clearly stating the number of neutrons and protons in their nucleus.
a. Beryllium b. Silicon
c. Chlorine d. Aluminium
e. Nitrogen
State whether the following statement is true or false :
The anode rays obtained from all the gases consist of positively charged particles called protons.
Name the three fundamental particles of an atom.
State its one drawback of Rutherford’s atomic model.
