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प्रश्न
Match the atomic numbers 4,8,10,15 and 19 with the following:
Element which can form trivalent ion
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उत्तर
Atomic number 15
Electronic configuration (15): 2,8,5
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संबंधित प्रश्न
Fill in the blank
An ion which has a positive charge is called a ..................
Multiple Choice Questions
The sum of number of protons and number of neutrons present in the nucleus of an atom is called its
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FILL IN THE BLANK
Rutherford won the Nobel Prize in 1908 for his investigations in the field of ......................
Sulphur has an atomic number 16 and a mass of 32.
State the number of protons and neutrons in the nucleus of sulphur. Give a simple diagram to show the arrangement of electrons in an atom of sulphur.
Match the atomic numbers 4,8,10,15 and 19 with the following:
Element with four shells
Differentiate mass number from atomic number.
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.
Name the 3 sub-atomic particles of an atom.
A ______ number describes a specific aspect of an electron.
