Which of the following particles contain more electrons than neutrons?I. 11HII. 1735Cl-III. 1939 K+A. I onlyB. II onlyC. I and II onlyD. II and III only

To answer this question, we need to understand the structure of an atom. An atom is made up of protons, neutrons, and electrons. The number of protons in an atom is called its atomic number, and it determines the type of atom (or element) it is. The number of protons and neutrons together is called the atomic mass.

I. 11H: This is hydrogen (H) with an atomic mass of 11. Hydrogen's atomic number is 1, meaning it has 1 proton. Therefore, it has 11 - 1 = 10 neutrons. Hydrogen in its neutral state also has 1 electron, so it does not have more electrons than neutrons.

II. 1735Cl-: This is chlorine (Cl) with an atomic mass of 35 and an atomic number of 17, meaning it has 17 protons and 35 - 17 = 18 neutrons. The negative charge indicates that it has gained an electron, so it has 17 + 1 = 18 electrons. Therefore, it has the same number of electrons and neutrons.

III. 1939 K+: This is potassium (K) with an atomic mass of 39 and an atomic number of 19, meaning it has 19 protons and 39 - 19 = 20 neutrons. The positive charge indicates that it has lost an electron, so it has 19 - 1 = 18 electrons. Therefore, it has fewer electrons than neutrons.

So, none of the given particles have more electrons than neutrons. The answer is none of the above.