Which one among the following is not a correct statement?a)Cathode ray...
Cathode rays are negatively charged particles:
- This is a correct statement. Cathode rays are streams of negatively charged particles called electrons. They were discovered by J.J. Thomson in the late 19th century.
Cathode rays are produced from all the gases:
- This is a correct statement. Cathode rays can be produced from a variety of gases. When a high voltage is applied across electrodes in a gas-filled tube, cathode rays are emitted from the cathode (negative electrode) and travel towards the anode (positive electrode). This phenomenon is observed in gases such as hydrogen, helium, neon, argon, and many others.
Electrons are basic constituents of all the atoms:
- This is a correct statement. Electrons are negatively charged subatomic particles that orbit the nucleus of an atom. They are considered the basic constituents of all atoms. The number of electrons in an atom determines its chemical properties and is equal to the number of protons in the nucleus.
Hydrogen ions do not contain any proton:
- This is an incorrect statement. Hydrogen ions are formed when a hydrogen atom loses its electron. They have a positive charge and are denoted as H+. However, hydrogen ions still contain a single proton in their nucleus. Therefore, the statement that hydrogen ions do not contain any proton is not correct.
In conclusion, the correct answer is option 'D' because hydrogen ions do contain a proton.