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प्रश्न
If an atom ‘A’ has an atomic number of eleven, state the number of protons and electrons it contains.
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उत्तर
Since the atom is electrically neutral i.e. is charge less, therefore
number of electrons = number of protons.
∴ It has 11 P and 11 electrons.
Atomic number z = p = e
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संबंधित प्रश्न
Multiple Choice Questions
number of valence electrons present in magnesium is
Mention briefly the salient features of Dalton’s atomic theory (five points)
What are the two main parts of which an atom is made of?
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.
The particle not present in an ordinary hydrogen atom is :
Name the sub-atomic particle whose charge is 0.
Define the term Mass number.
Define the term Valence shell.
What is meant by the term subatomic particles?
