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# sodium atom electrons

The atomic number of sodium is 11. It is a soft, silvery-white, highly reactive metal.Sodium is an alkali metal, being in group 1 of the periodic table. Its electron configuration is $$1s^2 2s^2 2p^6 3s^1$$. Each orbital can hold only two electrons. $\ce{Na \rightarrow Na^{+} + e^{-}}$ The cation produced in this way, Na +, is called the sodium ion to distinguish it from the element. Sodium is a soft, silvery-white, highly reactive metal. Sodium, element number eleven, is the first element in the third period of the periodic table. It is abundant in the sun and other stars. 0 b. It will float on water. Its only stable isotope is 23 Na. The outermost shell of the sodium ion is the second electron shell, which has eight electrons in it. The sodium atom contains 11 electrons, 11 protons, and 12 neutrons. â¢ Sodium ion has a +1 charge whereas sodium atom is neutral. When we write the configuration we'll put all 11 electrons in orbitals around the nucleus of the Sodium atom. â¢ Because of the release of one electron, the sodium ion radius differs from the atomic radius. Atoms are neutral; they contain the same number of protons as electrons. The chemical symbol for Sodium is Na. What is the mass number of sodium? The distribution of electrons in the sodium atom is as follows: In the first orbit or K-shell = 2 electrons In the second orbit or L-shell = 8 electrons In the third orbit or M-shell = 1 electron. 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 coulombs. Or, we can write distribution of electrons in a sodium atom as 2, 8, 1. By removing an electron from this atom we get a positively charged Na + ion that has a net charge of +1. This means that sodium atoms have 11 protons. Also, the orbitals have a specific order of filling, generally: However, there is some overlap (any chemistry textbook has the details). The free metal does not occur in â¦ â¢ Sodium atom is very reactive; therefore, wonât find free in nature. Chemistry Matter Elements. Sodium is a chemical element with the symbol Na (from Latin "natrium") and atomic number 11. In writing the electron configuration for sodium the first two electrons will go in the 1s orbital. A neutral sodium atom, for example, contains 11 protons and 11 electrons. Sodium has 11 electrons â¦ 2 Answers Kaisha May 11, 2017 Mass number= 23. Related Questions & Answers: 1 c. 2 d. 8 It exists as sodium ions in a compound. Explanation: The mass number is the sum of the neutrons and protons in an atomâ¦ A sodium atom, which has 11 electrons, has _____ electron(s) in its third energy level. The resulting model of the atom is called the quantum model of the atom. Sodium is a chemical element with atomic number 11 which means there are 11 protons and 11 electrons in the atomic structure. The nex six electrons will go in the 2p orbital. Atoms that gain extra electrons become negatively charged. But in sodium ion the last shell has 8 electrons. Sodium chloride or salt (NaCl) Soda ash (Na 2 CO 3) Baking soda (NaHCO 3) Sodium hydroxide or caustic soda (NaOH) Sodium nitrate or Chilean saltpeter (NaNO 3) Sodium Borate or borax (Na 2 B 4 O 7) Interesting facts: It is found free in nature. In a neutral sodium atom, the number of protons and electrons are equal. It will ignite spontaneously on water. a. A neutral sodium atom is likely to achieve an octet in its outermost shell by losing its one valence electron. 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