Observe the given chart and answer the questions given below. Element A B C D Electronic configuration 2, 1 2, 8 2, 8, 1 2, 8, 8 1. Which elements are in the same row? 2. Which elements have the same column? 3. Which elements are in the 18th column? 4. Which element is more reactive among A and C? 5. Which of the following elements A or B will form compounds?

1. Elements A and B are in the same row. Similarly, elements C and D are also in the same row. 2. Elements A and C have the same column. Similarly, elements B and D also have the same column. 3. Elements B and D are in the 18th column. 4. Element C is more reactive than element A. 5. Element A will form compounds as it can easily lose its valence electron.

Observe the given chart and answer the questions given below. Ele…

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Question

Observe the given chart and answer the questions given below.

Element	A	B	C	D
Electronic configuration	2, 1	2, 8	2, 8, 1	2, 8, 8

Which elements are in the same row?
Which elements have the same column?
Which elements are in the 18th column?
Which element is more reactive among A and C?
Which of the following elements A or B will form compounds?

✓

Answer

Elements A and B are in the same row. Similarly, elements C and D are also in the same row.
Elements A and C have the same column. Similarly, elements B and D also have the same column.
Elements B and D are in the 18th column.
Element C is more reactive than element A.
Element A will form compounds as it can easily lose its valence electron.

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