Question

Let us find how many riddles you can solve.(i) I am the only noble gas whose outermost shell has 2 electrons. Who am I?(ii) I am placed in group 16 of the modern periodic table and essential for your respiration. Who am I?(iii) I combine with chlorine to form your table salt. Who am I?(Hint: Answers are present in the grid]

Answer 1

Answer:

Helium (He)

Oxygen (O)

Sodium (Na)

Explanation:

Q : I am the only noble gas whose outermost shell has 2 electrons. Who am I

Ans : I am Helium  (He)

Helium has only 2 electrons in outermost shell as it has only two electrcons

Q I am placed in group 16 of the modern periodic table and essential for your respiration. Who am I

Ans : I am oxygen   (O)

Oxygen lies in group 16 & essential for our respiration

Q I combine with chlorine to form your table salt. Who am I

Ans : I am Sodium  (Na)

Sodium react with Chlorine to make NaCl  (Table Salt)

Answer 2

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(i) I am the only noble gas whose outermost shell has 2 electrons. Who am I?

➡Helium

(ii) I am placed in group 16 of the modern periodic table and essential for your respiration. Who am I?

➡Oxygen

(iii) I combine with chlorine to form your table salt. Who am I?

➡Sodium