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प्रश्न
Elements with stable electronic configurations have eight electrons in their valence shell. They are ______.
विकल्प
halogens
metals
noble gases
non metals
उत्तर
Elements with stable electronic configurations have eight electrons in their valence shell. They are noble gases
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संबंधित प्रश्न
Give electron dot diagram of the following:
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\[\ce{^40_20Ca}\]
Complete the table give below.
| Element |
Atomic number |
Electron distribution | Valence electrons | Lewis dot structure |
| Lithium | 3 | 1s22s1 | ||
| Boron | 5 | 1s22s22p1 | ||
| Oxygen | 8 | 1s22s22p4 |
