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Which of the following have inert gases ...

Which of the following have inert gases 2 electrons in the outermost shell?

A

He

B

Ne

C

Ar

D

Kr

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Atom of seven elements A,B ,C, D, E,F and G have a different number of electronic shells but have the same number of electrons in their outermost shells. The element A and C combine with chlorine to form an acid and common salt respectively. The oxide of element A is liquid at room temperature and is a neutral substance while the oxides of the remaining six elements are basic in nature . Based on the above information, answer the following question given ahead : Which one of the given elements is likely to have the smallest atomic radius ?.

Atom of seven elements A,B ,C, D, E,F and G have a different number of electronic shells but have the same number of electrons in their outermost shells. The element A and C combine with chlorine to form an acid and common salt respectively. The oxide of element A is liquid at room temperature and is a neutral substance while the oxides of the remaining six elements are basic in nature . Based on the above information, anwer the following question given ahead : Show the formation of the compound by a combination of element C with chlorine with the help of electronic structure .

Atom of seven elements A,B ,C, D, E,F and G have a different number of electronic shells but have the same number of electrons in their outermost shells. The element A and C combine with chlorine to form an acid and common salt respectively. The oxide of element A is liquid at room temperature and is a neutral substance while the oxides of the remaining six elements are basic in nature . Based on the above information, anwer the following question given ahead : Write the formula of the compound formed by the reaction of the element A with oxygen .

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