The electronegativities (according to Pauling) of the elements in Period 3 of the Periodic Table are as follows:
$A l [1.5] C l [3.0] M g [1.2] N a [0.9] P [2.1] S [2.5] S i [1.8] .$
Arrange the elements in the order in which they occur in Periodic Table from left to right:

N a, M g, A l, S i, P, S, C l .

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C l, S, P, S i, A l, M g, N a

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N a, M g, A l, S, S i, P, C l .

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C l, S i, P, S, A l, N a, M g

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Solution

The correct option is A $N a, M g, A l, S i, P, S, C l .$
In a period, as we move from left to right electronegativity increases so order is
$N a, M g, A l, S i, P, S, C l .$

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(b) Na >Mg >Al >Si > Cl
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Q. The first ionisation energies of six

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The electronegativities (according to Pauling) of the elements in Period 3 of the Periodic Table asfollow with the elements arranged in alphabetical order :

$\begin{matrix} A l & C l & M g & N a & P & S & S i 1.5 & 3.0 & 1.2 & 0.9 & 2.1 & 2.5 & 1.8 \end{matrix}$

Arrange the elements in the order in which they occur in the Periodic Table from left to right.

(The group 1 element first , followed by the group 2 element and so on , up to group 7).

Which of the following elements have similar properties?

F, N a, M g, A l, S i, P, S, C l, A r

K

Q. Consider the following orderings:

I

A l > S i > P > C l

I I

B e < M g < C a < S r

I I I

I < B r < C l < F

I V

{N a}^{+} < {M g}^{2 +} < {A l}^{3 +} < {S i}^{4 +}

Which of these give(s) a correct trend in ionization energy?

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The electronegativities (according to Pauling) of the elements in Period 3 of the Periodic Table are as follows:Al[1.5]Cl[3.0]Mg[1.2]Na[0.9]P[2.1]S[2.5]Si[1.8].Arrange the elements in the order in which they occur in Periodic Table from left to right:

The correct option is A Na,Mg,Al,Si,P,S,Cl.In a period, as we move from left to right electronegativity increases so order isNa,Mg,Al,Si,P,S,Cl.

The electronegativities (according to Pauling) of the elements in Period 3 of the Periodic Table are as follows:
$A l [1.5] C l [3.0] M g [1.2] N a [0.9] P [2.1] S [2.5] S i [1.8] .$
Arrange the elements in the order in which they occur in Periodic Table from left to right:

The correct option is A $N a, M g, A l, S i, P, S, C l .$
In a period, as we move from left to right electronegativity increases so order is
$N a, M g, A l, S i, P, S, C l .$