# Atomic number 12 how many electrons

##### 2020-01-25 03:06

Finding the atomic number on the Periodic Table gives not only the number of protons but also the number of electrons in a neutral atom or isotope. In an unbalanced atom or isotope, the number of protons doesn't equal the number of electrons.As magnesium has atomic number 12 it's electronic configuration is 2, 8, 2 in the K, L, M shells. Thus as we can see it has 2 electrons in the outermost shell hence, it has 2 valence electrons. atomic number 12 how many electrons

The number of neutrons is equal to the Atomic Mass minus the Atomic Number. So for your question, the Periodic Table tells us that carbon has an Atomic Number of 6, so there are 6 protons and 6 electrons. Atomic Number: 12 Atomic Mass: 24. 305 amu (1380. 15 K, 2024. 6 F) Number of ProtonsElectrons: 12 Number of Neutrons: 12 Classification: Alkaline Earth Crystal Structure: Hexagonal Density @ 293 K: 1. 738 gcm 3 Color: grayish Atomic Structure If you know of any other links for Magnesium, please let me know MLA Format for Citing This How many protons and electrons are contained in an atom of element 44? 44 protons and 44 electrons A carbon atom has a mass number of 12 and and atomic number of 6.atomic number 12 how many electrons How can the answer be improved?

## Atomic number 12 how many electrons free

No matter how many electrons or neutrons an atom has, the element is defined by its number of protons. In fact, it's actually possible to have an atom consisting of only a proton (ionized hydrogen). The periodic table is arranged in order of increasing atomic number, so the number of protons is the element number. For hydrogen, the number of protons is 1. atomic number 12 how many electrons Sep 23, 2011 Best Answer: 2 8 2 shells have 2, the 8 then 8 for the first three lines of the periodic table. Which is where you should look for this kind of information. Atomic number 12 means 12 protons and therefore 12 electrons 12 electrons will fill the energy levels thusly. 2, 8, 2 So three electron shells means period 3 and 2 electrons in the outer shell means group 2. The atomic number of 12 is Magnesium has the following number of electrons in their respective shell# 2, 8, color(red)2# . . Where 2 is the electron in the outermost shell. . The atomic number indicates the number of protons. The mass number is the sum of the number of neutrons and the number of protons. mass number protons neutrons As we know from the atomic number, the number of protons is equal to 6, so the number of neutrons is 8. neutrons 14 6

Rating: 4.80 / Views: 340