Consider the following elements 20Ca 8Or 18Ar 16S 4Be 2He Which of the above elements would you expe...........

Chemistry Chapter - 5

Consider the following elements

20Ca, 8Or 18Ar, 16S, 4Be, 2He

Which of the above elements would you expect to be in group 16 of the Periodic Table?

20Ca and 16S

20Ca and 8O

18Ar and 16S

8O and 16S

- Elements in Group 16 of the Periodic Table are known as chalcogens. Common elements in this group include oxygen (O) and sulfur (S).

- 20Ca (Calcium): This element is in Group 2, not Group 16.

- 8O (Oxygen): Oxygen is indeed a Group 16 element.

- 18Ar (Argon): Argon is a noble gas, placed in Group 18.

- 16S (Sulfur): Sulfur is a chalcogen, making it part of Group 16.

- 4Be (Beryllium): Found in Group 2, Beryllium is an alkaline earth metal.

- 2He (Helium): Helium, in Group 18, is classified as a noble gas.

- Option 1: Incorrect, contains 20Ca.

- Option 2: Incorrect, contains 20Ca.

- Option 3: Incorrect, contains 18Ar.

- Option 4: Correct, contains only 8O and 16S.

The correct answer is: Option 4 - 8O and 16S

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