Write your name, Centre number and candidate number on the answer sheet in the spaces provided unless this has been done for you. 16600 18000 47000 53200. 4 In which species are the numbers of electrons and neutrons equal? 7 Iodine trichloride, ICl3, is made by reacting iodine with chlorine.
Feather was therefore the first to show that neutrons produce nuclear disintegrations. In Rome, Enrico Fermi bombarded heavier elements with neutrons and found the products to be radioactive. By 1934 Fermi had used neutrons to induce radioactivity in 22 different elements, many of these elements of high atomic number.
In this video we'll use the Periodic table and a few simple rules to find the protons, electrons, and neutrons for the element Iodine (I). From the Periodic...
The number of protons define the identity of an element (i.e., an element with 6 protons is a carbon atom, no matter how many neutrons may be present). In a periodic table arranged in order of increasing atomic number, elements having similar chemical properties 53. I. Iodine. 126.9045.
Ans. (i) Atomic number: The atomic number of an element is equal to the number of protons in the nucleus of its atom. e.g., Oxygen has 6 protons hence atomic no. = 6. (ii) Maas number: The mass number of an atom is equal to the number of protons and neutrons in its nucleus.
The number of electrons is therefore the same as the atomic number. Atoms Protons Neutrons Electrons 2 29 53 2 35 74 2 29 53. helium copper iodine. Atomic number is the number of protons rather than the number of electrons, because atoms can lose or gain electrons but do not normally lose or gain protons. 21 of 47 Boardworks Ltd 2007 What are ...
Iodine. Iodine is a non-metallic, dark-gray/purple-black, lustrous, solid element. Iodine is the most electropositive halogen and the least reactive of the halogens even if it can still form compounds with many elements.