Single correct option
Which of the statements given below is/are correct?
1. All elements in the same period of the periodic table have the same number of valence electrons.
2. Elements in the same group show similar chemical properties.
1. All elements in the same period of the periodic table have the same number of valence electrons.
2. Elements in the same group show similar chemical properties.
- A. 1 only
- B. 2 only
- C. Both 1 and 2
- D. Neither 1 nor 2
Show answer and solution
Answer: (B) 2 only
Across a period the number of valence electrons increases by one at each step, and it is the same down a group; statement 1 is wrong. Similar valence configuration gives similar chemistry within a group; statement 2 is correct.
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