10. In the atoms in the Rutherford-Geiger-Marsden experiment, the alpha particle

Question

10. In the atoms in the Rutherford-Geiger-Marsden experiment, the alpha particles were repelled by a. nuclei. b. electrons. c. neutrons. d. gravity. e. protons 11. Which statement about isotopes of the same element is not correct? They have the same atomic mass. b· a. They have the same number of electrons. They have essentially the same chemical properties. d· c. They have different numbers of neutrons. e· They have the same number of protons. Which of the following molecular compounds has an incorrect formula or is not named correctly? a. SO, sulfur monoxide b. P2Ns, phosphorus pentanitride c. NO2, nitrogen dioxide 12. d. CCl4, carbon tetrachloride e. SFo, sulfur hexafluoride

Explanation / Answer

10. in Rutherford experiment, alpha particles were repelled by nuclei. Answer is a.

11. the first statement is not correct. isotopes of same element have different masses.

So, answer is a.

12. The name of b is incorrect. P2N5 is diphosphorus pentanitride

Answer is b.

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