Question

In the atom of an element x , 5 electrons are present in the outermost shell . If it acquires noble gas confriguration by accepting requisite number of electrons , then what would be the charge on the ion so formed

Answer 1

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an atom with 5 electrons cannot have just one electron in its valence shell. If the atomic number of an element is 5, then its electronic configuration will be 2, 3. Thus it will have three valence electrons, and hence it achieves a noble gas configuration by losing these electrons. The charge on these ions will be +3. 

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Also, an element with 1 electron in its valence shell does not gain electrons. Rather, it achieves a noble gas configuration by losing electrons. This is because for completing its octet, if an atom gains electrons, then it would do so by gaining 7 electrons, which requires a lot of input of energy. 

Answer 2

Answer:

Charge on the ion will be -3.

Explanation:

The atom of given element x contains 5 electrons in its outermost shell.

To achieve the noble gas configuration an atom should have 8 electrons in its outermost shell.

Since given atom has 5 electrons in its outermost shell it needs 3 extra electrons to achieve the noble gas configuration.

When an atom receives electrons to complete is outermost shell it gets the negative charge.

Now, given atom will receive 3 electrons to acquire noble gas configuration so the ion will have -3 charge on it.