Exams › NEET › Chemistry

Which of the following statement(s) about the Modern periodic table is/are incorrect? (i) The elements in the Modern periodic table are arranged on the basis of their decreasing atomic number. (ii) The elements in the Modern periodic table are arranged on the basis of their increasing atomic number (iii) Isotopes are placed in an adjoining group(s) in the periodic table.

1. (i) only
2. (i) and (ii)
3. (ii) and (iii)
4. (i) and (iii)

Correct answer: (i) only

Solution

Statement (i) is incorrect because the modern periodic table is arranged in increasing atomic number, not decreasing atomic number. Statement (ii) is correct, and isotopes occupy the same position since they have the same atomic number.

Related NEET Chemistry questions

• What is the physical state of \( \boldsymbol{P} \boldsymbol{C l} \) late under normal condition?
• Match the following: Oxide - Nature (A) CO - Basic (B) BaO - Neutral (C) Al2O3 - Acidic (D) Cl2O7 - Amphoteric Which of the following is incorrect option?
• Which of the following compounds has a 3-centre bond?
• Among boron trifluoride, stannic chloride and stannous chloride, Lewis acid is represented by:
• The basic structural unit of silicates is:
• Which statement is wrong?

⚔️ Practice NEET Chemistry free + battle 1v1 →