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प्रश्न
An element ‘M' has 50% of the electrons filled in the 3rd shell as in the 2nd shell. The atomic number of ‘M’ is ______.
विकल्प
10
12
14
18
उत्तर
An element ‘M' has 50% of the electrons filled in the 3rd shell as in the 2nd shell. The atomic number of ‘M’ is 14.
Explanation:
Si has a 14th atomic number and an electrical configuration of 2, 8, and 4. The third shell of silicon is packed with 50% as many electrons as the second shell.
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