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Q.

Which of the following elements are included in the same group in the modern periodic table?

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a

F, Mg, Na

b

N, Si, Ne

c

Li, Na, K

d

H, Ca, He

answer is D.

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Detailed Solution

 Li, Na and K are present in the same group(group-1) of the modern periodic table. Elements present in this group are known as 'alkali metals'.

All the other sets are present in different groups of the modern periodic table (Refer to the image).

Question Image

Hence,  Li, Na, and K is the correct answer.

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Which of the following elements are included in the same group in the modern periodic table?