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प्रश्न
Define the term of atomic number.
What is meant by the term atomic number
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उत्तर
Atomic number [Z]: “Is the number of protons in the nucleus of an atom.”
OR “Is the number of positive charges in the nucleus of its atom.”
OR “Is the number of electrons in the complete atom.”
Z = P = e
संबंधित प्रश्न
The composition of the nuclei of two atomic species X and Y are given as under
| X | Y | |
| Protons | 6 | 6 |
| Neutrons | 6 | 8 |
Give the mass numbers of X and Y. What is the relation between the two species?
(a) Which of the nuclear particles is present in the same fixed number in the atoms of any particular element?
(b) What do we call this number which is characteristic of a particular element?
The number of electrons in the atom of an element X is 15 and the number of neutrons is 16. Which of the following is the correct representation of an atom of this element ?
The properties of the elements are a periodic function of their __________.
Draw the structure of the following atoms showing the nucleus containing – protons, neutrons and the orbits with the respective electron:
Isotopes of hydrogen [11H, 21H, 31H]
The No. of electrons in the outermost shell of the atom of an inert gas ______.
When an atom gives electrons from its outermost shell, it becomes ______ charged.
The elementary particles such as protons and neutrons are collectively called ______.
K and L shells can accommodate a maximum of 2 and 8 electrons respectively.
What is the relation between mass number & atomic number?
