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chlorine
Sodium is in 3rd period and seven other elements are in same period they are Magnesium, Aluminium, Silicon, Phosphorus, Sulphur, Chlorine and Argon.
No. Sulfur has an atomic number of 16 and Argon has an atomic number of 18
Several elemental gases are not in the same period as lithium. These are: hydrogen helium chlorine argon bromine krypton xenon radon
Sulfur needs to gain 2 electrons to have the electon configuration of Argon
Chlorine
chlorine
Sodium is in 3rd period and seven other elements are in same period they are Magnesium, Aluminium, Silicon, Phosphorus, Sulphur, Chlorine and Argon.
No element has the exact same election arrangement as another element. However ion can have the same election arrangement as another element. For example Chloride (Cl-) has the same configuration as Argon, and Potassium (I) (K+) also has the same configuration as argon.
No. Sulfur has an atomic number of 16 and Argon has an atomic number of 18
Several elemental gases are not in the same period as lithium. These are: hydrogen helium chlorine argon bromine krypton xenon radon
Sulfur needs to gain 2 electrons to have the electon configuration of Argon
Argon
The mass of the chlorine atom is 35.5. The mass of the argon atom is 40. So you may think that the argon is more massive than chlorine. That is not correct.In a given volume of gas, at given pressure and temperature, the number of molecules are same in case of the gas. Chlorine molecule has got two atoms. The argon remains single. So the mass of chlorine molecule is 35.5*2 = 71. the mass of argon atom and molecule is 40.So the chlorine gas is much massive as compared to argon gas. The proportion goes to be 71 to 40, to be exact.
Sulfur
Because the number of protons in chlorine atom and chloride ion are the same (17 protons). The element argon has 18 protons.
because the atomic number of each element is an integer and it increases than its preceding one in the same period by one