Atomic number 16 is a crossword puzzle clue. Clue: Atomic number 16. Atomic number 16 is a crossword puzzle clue that we have spotted 1 time. There are related clues (shown below). In the periodic table, the element with atomic number 16 will be placed in the group. Options (a) third (b) fourth (c) fifth (d) sixth. Correct Answer: sixth. Explanation: ₁₆X ≡ 1s²2s²2p⁶3s²3s⁴; there are 6 electrons in outermost shell so it belongs to VI A group. Related Questions: The ozone layer forms naturally. Atomic number group 16 elements list. Which elements have group number of 16? List the atomic symbol and element names.
In the modern periodic table, the elements are listed in order of increasing atomic number. The atomic number is the number of protons in the nucleus of an atom. 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). The number of protons determines how many electrons surround the nucleus, and it is the arrangement of these electrons that determines most of the chemical behavior of an element.
In a periodic table arranged in order of increasing atomic number, elements having similar chemical properties naturally line up in the same column (group). For instance, all of the elements in Group 1A are relatively soft metals, react violently with water, and form 1+ charges; all of the elements in Group 8A are unreactive, monatomic gases at room temperature, etc. In other words, there is a periodic repetition of the properties of the chemical elements with increasing mass.
Atomic Number Definition
In the original periodic table published by Dimitri Mendeleev in 1869, the elements were arranged according to increasing atomic mass— at that time, the nucleus had not yet been discovered, and there was no understanding at all of the interior structure of the atom, so atomic mass was the only guide to use. Once the structure of the nucleus was understood, it became clear that it was the atomic number that governed the properties of the elements.