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Question
Which of the following have inert gases 2 electrons in the outermost shell.
Options
He
Ne
Ar
Kr
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Solution
He
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RELATED QUESTIONS
State whether the following statement is true of false:
The elements in a group have consecutive atomic numbers.
The element which forms a basis oxide has the atomic number of:
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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:
(2) Highly reactive and soft metal which imparts yellow colour when subjected to flame and is kept in kerosene.
(5) The first element of second Period
(6) An element which is used in making fluorescent bulbs and is second member of Group 18 in the Modern Periodic Table
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An element in Period 1 which can be placed in both Group 1 and Group 17 of the Periodic Table.
