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प्रश्न
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]
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उत्तर
Structure of atoms:
\[\ce{^2_1H}\]
\[\ce{^3_1H}\]
Z is Atomic Number and A is the mass number
Isotopes of hydrogen \[\ce{^1_1H}\]
Z = 1 = p = e
∴ e = 1
A = p + n
1 = 1 + n
∴ n = 1 − 1 = 0
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संबंधित प्रश्न
Which of the following are isoelectronic species i.e., those having the same number of electrons?
Na+, K+, Mg2+, Ca2+, S2–, Ar
Fill in the following blanks in respect of an atom of an element
| No. of protons | No. of neutron | Mass number | Atomic number | No. of electrons | Symbol |
| 11 | 12 | ___________ | ___________ | ___________ | ________ |
The atom of an element is made up of 4 protons, 5 neutrons and 4 electrons. What are its atomic number and mass number?
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:
Lithium [At. no. = 3, Mass no. = 7]
An element ‘A’ has mass number 23 and atomic number 11. State the –
- no. of neutrons in its shell,
- electronic configuration of the element ‘A’.
Explain the following terms.
- Proton
- Electron
- Neutron.
In a neutral atom number of protons is equal to the number of neutrons.
In which one of the following, the number of protons is greater than the number of neutrons but number of protons is less than the number of electrons?
State the term for the following:
The amount of substance which contains the same number of units as the number of atoms in carbon-12.
