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प्रश्न
The diagram represents an isotope of hydrogen [H]. Answer the following:
Atomic no. = 1
Mass no. = 1
If an isotope of ‘H’ has mass no. = 3, how many neutrons does it have.
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उत्तर
Two neutrons. .........[∵ A = P + n]
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संबंधित प्रश्न
If number of electrons in an atom is 8 and number of protons is also 8, then
- What is the atomic number of the atom? and
- What is the charge on the atom?
Explain the Mass number with example.
Fill in the blank
An ion which has a positive charge is called a ..................
Fill in the blanks.
Isotopes are the atoms of ______ element having the ______ atomic number but ______ mass number.
WRITE SHORT ANSWER
Define the atomic mass number of an atom.
What is meant by the 'atomic number of an element'?
Draw the atomic diagram of the following element showing the distribution of – protons, neutrons and the electrons in the various shell of the atom.
Argon – \[\ce{^40_18Ar}\]
[The upper number represent the – mass number and the lower number represent the – atomic number e.g. calcium – mass number = 40, atomic number = 20]
Draw the structure of the following atoms showing the nucleus containing – protons, neutrons and the orbits with the respective electron:
Silicon [At. no. = 14, Mass no. = 28]
Every atom has an equal number of protons and electrons. The nature of the atom is ______.
When an atom gives electrons from its outermost shell, it becomes ______ charged.
