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Atom of seven elements A,B ,C, D, E,F a...

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 :
What could the element A be ?

Text Solution

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Since all the seven elements have same number of electron in their outermost shells, this means that they belong to the same group. From the available information , it becomes clear that the group of alkali metals ( group 1 ) . Hydrogen (A) is also included. The elements present are :

Let us answer the question asked .
The element A' is hydrogen (H).
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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, anwer the following question given ahead : What would be the ratio of number of combining atoms in a compound formed by the combination element A with carbon ?

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 ?.

Knowledge Check

  • The number of electrons in the outermost shell of alkali metals is __________ .

    A
    a.1
    B
    b.2
    C
    c.3
    D
    d.7

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

    A
    He
    B
    Ne
    C
    Ar
    D
    Kr

  • 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, 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 : Will element A to G belong to the same period or same group of the periodic table ?

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    Three elements having 7 electrons in their outermost shell.

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

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