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How many outer shell electrons are in the first group on the periodic table? From that you can tell how many electrons the atom needs to lose or gain to equal 8. Hydrogen has 1 outer shell which contains 1 electron. Look at lithium first. Furthermore, what does carbon have in its outer shell? How many electrons does helium (atomic number 2) have in its outer shell. Therefore a Li-atom also has to have 3 electrons surrounding the nucleus. Valence electrons are electrons in the outermost shell of an atom's electron cloud. It has two electrons in the first level and one more in a second level. Lithium has 3 electrons circling in its electron configuration. ... -Lithium, Beryllium, and boron (less than 8)-all period 3 and below can hold >8. Lithium has 1 valence electron Explanation: Valence electron are on the outermost shell, and if you look at lithiums model you will see 1 electron on the outer most shell 4. Li-ion has a charge of +1 so it has given up one electron. It has 2 outer shells. Check out beryllium. Beryllium has one more proton than lithium, which is why it has one more electron. Atoms combine into molecules by trying in most cases to have valence electrons entirely filling a shell. Answer: 2 Lithium is element number 3 in the periodic table of elements, meaning it has 3 protons in its nucleus. I think what you are asking is what group and period does an element with three valence electrons and three shells fall in to. 1s2 2s1. For example, Lithium is the first element in the 2d period. 2, 4 . to have 8 electrons in its outer most shell (octet rule) is the atom’s valence (it is a number). The maximum number of electrons in the fourth energy level. How many electrons does boron have in its outer … When atoms bond, they share electrons in their outermost shell.Carbon has four empty spaces in its outer shell, enabling it to … Hint: The “Group Number” on the periodic chart tells you the number of electrons in the outermost shell. ... with the s describing which orbital contains electrons and the 1 describing how many electrons reside in that orbital. The periodic table tells us how many valence electrons are in any main group elements. Thereof, how many electrons does a carbon have? Elements in the first group of the periodic table have just one electron in their outer shell. Click to see full answer. As seen by the periodic table Hydrogen has 1 electron, this is evident from the lower number on Hydrogen which tells you how many neutrons and electrons the element has. This is because of the quantum nature of the atoms, where electrons are organized in shells: the first (named the K shell) has 2 electrons, the second (L-shell) has 8, the third (M shell) has 18. Electron configuration notation for fluorine is 1s22s22p5 . 2. The first shell is completely filled with two electrons and … In general, the first shell can hold 2 electrons, … It has the same electrons as lithium, plus one more. Neon is the last element in the 2d period, and has EIGHT electrons in the outer shell. Carbon has two electron shells, with the first holding two electrons and the second holding four out of a possible eight spaces. Number of electrons in the innermost shell of lithium (atomic number 3) 2. Depends on the atom. The outermost orbital shell of an atom is called its valence shell, and the electrons in the valence shell are valence electrons. It has 1 electron in the outer shell (the other 2 are in the 1st period shell). 32. 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