Arrange the following in the order given below : Increasing order of ionization potential of $N a, A l, M g, S i$ is :
$N a < A l < M g < S i$ . if true enter 1 ,else enter 0.

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Solution

The correct option is A 1
Increasing order of ionization potential of $N a, A l, M g, S i$ is $N a < A l < M g < S i$ . All these elements belong to third period. Ionisation enthalpy increases across a period with breaks when an electron of somewhat stable configuration is removed. When an electron is removed from Al, stable valence shell configuration of $3 s^{2}$ is obtained. When an electron is removed from Mg, stable valence shell configuration of $3 s^{2}$ is broken. This requires large amount of energy. Hence, the ionisation potential of Mg is higher than the ionisation potential of Al.

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Arrange the following elements in the order of their decreasing metallic character
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(a) Cl > Si >Al > Mg >Na
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Arrange the following in the order given below : Increasing order of ionization potential of Na,Al,Mg,Si is : Na<Al<Mg<Si. if true enter 1 ,else enter 0.1

Arrange the following in the order given below : Increasing order of ionization potential of $N a, A l, M g, S i$ is :
$N a < A l < M g < S i$ . if true enter 1 ,else enter 0.

1