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प्रश्न
Which of the following have inert gases 2 electrons in the outermost shell.
विकल्प
He
Ne
Ar
Kr
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उत्तर
He
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संबंधित प्रश्न
State whether the following statement is true of false:
The elements in a group have consecutive atomic numbers.
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How did the early chemists classify elements?
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- Write the balanced equation when it burns in the presence of air
- Write a balanced equation when this oxide is dissolved in water
- Draw the electron dot structure for the formation of this oxide
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Across:
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(3) Metal used in making cans and member of Group 14.
(4) A lustrous non-metal which has 7 electrons in its outermost shell.
Down:
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(5) The first element of second Period
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(7) A radioactive element which is the last member of halogen family.
(8) Metal which is an important constituent of steel and forms rust when exposed to moist air.
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Li, ______, K
