WebNumber of neutrons in sodium. We know that the atomic number of sodium is 11 and the atomic mass number is about 23. Neutron = 23 – 11 = 12. Therefore, a sodium atom has … WebCorrect option is B) The atomic number of sodium is 11. It has 11 electrons. It loses one electron to form sodium ion. Na→Na ++e −. Then the number of electrons in sodium ion is 11−1=10. Was this answer helpful?
Electronic configurations and the periodic table - BBC Bitesize
Web1. State the number of valence electrons for a sodium atom and a chiorine atom. 11. Use the periodic table to predict an ionic charge for each of the following metal ions. 2. State the number of valence electrons for a hydrogen atom (a) Li ion (b) Mg ion and a chlorine atom. (c) Al ion (d) Sn ion 3. WebProtons and Neutrons in Sodium. Sodium is a chemical element with atomic number 11 which means there are 11 protons in its nucleus. Total number of protons in the nucleus is called the atomic number of the atom and is given the symbol Z.The total electrical charge of the nucleus is therefore +Ze, where e (elementary charge) equals to 1,602 x 10-19 … halkolaituri pohjoisranta
Atomic number and mass number - Atomic structure - AQA - GCSE …
WebApr 15, 2014 · Sodium, like all the group 1 alkali metals, has one valence electron. Valence electrons are the outermost electrons, and are the ones involved in bonding. Sodium has 11 electrons: its atomic number is 11, so it has 11 protons; atoms are neutral, so this means sodium also has 11 electrons. Electrons are arranged in "shells" or energy levels. WebThe atomic number of an atom is equal to the number of protons in the nucleus of an atom or the number of electrons in an electrically neutral atom. Atomic number = Number of protons. For example, in a sodium atom, there are 11 electrons and 11 protons. Thus the atomic number of Na atom = number of electrons = number of protons = 11. WebMar 20, 2016 · Sodium chloride, common salt, is a compound, and, therefore, HAS NO ATOMIC NUMBER! We can speak the the atomic number of its constituent elements, i.e. … hall 7 ntu