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An element ‘X’ has six electrons in its outer or valence shell.Its valency is+2, 2, 1

An element ‘X’ has six electrons in its outer or valence shell.Its valency is+2, 2, 1

Byju's Answer Standard VII Chemistry Variable Valency An element ‘X... Question

An element ‘X’ has six electrons in its outer or valence shell.

Its valency is___________(+2,-2,-1)

Open in App Solution

Understanding the concept: The distribution or arrangement of electrons into an atom's orbitals is known as electronic configuration.

The number of electrons present in the outermost shell are called valence electrons.

The number of electrons that participate in bond formation is called valency.

As per the octet rule, to complete the octet it needs two electrons.

The explanation of valencies:

+2 is the valency in which the total number of electrons in the outermost shell is equal to 2.

For example, Calcium loses the outer two valence electrons and attains a valency of +2.

+1 is the valency in which the total number of electrons is equal to one and loses this electron.

For example, sodium has 1 electron in its outermost shell and it will lose this electron ad attains a valency of 1.

-2 is the valency in which the total number of electrons in the outermost shell is equal to 6. For example, the element sulfur contains 6 valence electrons in the outer shell, which will gain two 2 electrons, and attain a valency of -2.

Thus An element ‘X’ has six electrons in its outer or valence shell, Its valency is -

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SIMILAR QUESTIONS

Q. An element has six electrons in its outermost shell, then its valency can be _________.Q.

B e

has 2 electrons in its outer shell,

O

has 6 electrons in its outer shell. Choose the correct option:

Q. An element has

2

electrons in its fourth shell. State:

(c) its valency

Q.

Statement A: Valency is always equal to the number of valence electrons in an atom.

Statement R: The oxygen atom has six electrons, it shows a valency of 2.

Q. An element L has 9 protons and its valency is 1. Another element M has proton 5 and valency 2. What is the difference in the number of electrons in L and M ?

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An element has 6 electrons in its M

An element has 6 electrons in its M-shell. Identify the element and find its valency.

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An element has 6 electrons in its M-shell

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prasanna Nov '16

An element has 6 electrons in its M-shell. Identify the element and find its valency.

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For having 6 electrons in M-shell, the atom of element must have its K and L-shell completely filled. Therefore, the electronic configuration would be 2, 8, 6(K,L,M)

Hence, atomic number =16, therefore element can be identified as sulphur (${}_{16}S$.

Since, 2 more electrons are needed to complete the octet of outer shell. Hence, the valency is 2.

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An element has six electrons in its outermost shell, then its valency can be .

Click here👆to get an answer to your question ✍️ An element has six electrons in its outermost shell, then its valency can be .

Question

An element has six electrons in its outermost shell, then its valency can be _________.

A

6

B

2

C

4

D

All of the above

Medium Open in App

Updated on : 2022-09-05

Solution Verified by Toppr

Correct option is D)

Sulphur has 6 electrons in it's outermost shell. It's valency is 2 in H

2 ​ S. 6 in SO 3 ​ , SF 6 ​ etc. 4 in SO 2 ​ , SOF 2 ​ etc.

(Valency is  the number of electrons gained, lost or shared during a chemical reaction.)

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