Only chemical elements have a valence.
The valence of chlorine is -1.
NaCl has an ionic bond, chlorine has one valence electron, sodium also.
The NCl3 molecule, like most other stable molecules, exist because they share electrons in such a way as to close out the valence shell. Therefore, although one usually doesn't say so in regards to molecules, NCl3 has 8 valence electrons.
electrons in Na2O
no it does not. NaCl is a neutral compound.
NH3
Na+ and Cl- ions are formed, which then results in the formation of the ionic compound NaCl.
In the Lewis dot structure for NaCl showing an ionic bond, sodium (Na) will have one dot representing its single valence electron, and chlorine (Cl) will have seven dots, one for each of its seven valence electrons. The electrons will be shown transferring from sodium to chlorine to form an ionic bond, with sodium losing its electron to become a cation (Na+) and chlorine gaining an electron to become an anion (Cl-).
1 mole NaCl = 58.44g NaCl0.48mol NaCl x 58.44g NaCl/1mol NaCl = 28g NaCl
I'm going to assume that you mean 23.34g of NaCl. 1 mole NaCl = 58.442g NaCl (the atomic weight of Na and Cl in grams) 23.34g NaCl x (1mol NaCl/58.442g NaCl) = 0.3994mol NaCl
1 mole NaCl = 58.443g NaCl = 6.022 x 1023 formula units NaCl 3.6g NaCl x 1mol NaCl/58.443g NaCl x 6.022 x 1023 formula units NaCl/mol NaCl = 3.7 x 1022 formula units NaCl
A sodium atom has 1 electron in its valence shell, while a chlorine atom has 7 electrons in its valence shell. When sodium reacts with chlorine to form sodium chloride, the sodium atom loses its 1 electron to achieve a stable octet configuration, while the chlorine atom gains this electron. The resulting sodium chloride molecule has 8 electrons in the valence shell of the chlorine atom.