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प्रश्न
Match the atomic numbers 4,8,10,15 and 19 with each of the following:
An element which does not form ion
उत्तर
Atomic number 10
Electronic configuration (10): 2,8
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संबंधित प्रश्न
What are the atomic numbers of elements whose outermost electrons is represented by 2p3.
TRUE \ FALSE
After the emission of a beta-particle, the atomic number of the atom increases by one.
Define the following form:
Atomic number
If an atom ‘A’ has atomic number 19 and mass number 39, state –
- Its electronic configuration.
- The number of valence electrons it possesses.
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]
Draw the structure of the following atoms showing the nucleus containing – protons, neutrons and the orbits with the respective electron:
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Define the term of atomic number.
From the symbol \[\ce{^4_2He}\] for the element helium, write down the mass number and the atomic number of the element.
What is common salt? Name the elements present in it. Write the formula of common salt. What are the atomic number and the mass number of the elements? Write the ions in the compound.
What is the relation between mass number & atomic number?
