Which of the following pairs have both the members from the same group of periodic table?

Mg, Cu

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Mg, Na

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Mg, Cl

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Mg, Be

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Solution

The correct option is D
Mg, Be

General outermost electronic configuration for both Mg and Be is ns². These are alkaline earth metals.

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Question 17
Arrange the following elements in the order of their decreasing metallic character
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(a) Cl > Si >Al > Mg >Na
(b) Na >Mg >Al >Si > Cl
(c) Na > Al > Mg > Cl > Si
(d) Al > Na> Si > Ca> Mg

Q. Can the following groups of elements be classified as Dobereiner's triads?

(a) Na, Si, Cl
(b) Be, Mg, Ca
Give reason for your answer.
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Question 29
Can the following groups of elements be classified as Dobereiner’s triad?

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(b) Be, Mg, Ca

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Which of the following pairs have both the members from the same group of periodic table?

The correct option is D Mg, Be General outermost electronic configuration for both Mg and Be is ns2. These are alkaline earth metals.

The correct option is D
Mg, Be

General outermost electronic configuration for both Mg and Be is ns². These are alkaline earth metals.