The atomic number of the elements X and Y are 20, 26 respectively. Whe

1.	The atomic number of the elements X and Y are 20, 26 respectively. When these elements combine with chlorine, three compounds XCl2 , YCl2 , YCl3 are formed. a. What is the specialty of the oxidation number of Y, compared to that of X?b. Explain the reason for this, on the basis of the subshell based electronic configuration.
Answer» a. Element X has constant oxidation state. Y shows variable oxidation states. b. X₂₀ = 1s² , 2s² , 2p⁶ , 3s² , 3p⁶ , 4s² X₂₆ = 1s², 2s² , 2p⁶ , 3s² , 3p⁶ , 4s² , 3d⁶ Y is a transitional element. In chemical reactions only two elections in ‘ s’ subshell or besides ‘s’ subshell electrons ‘d’ sub shell electrons also take part

The atomic number of the elements X and Y are 20, 26 respectively. When these elements combine with chlorine, three compounds XCl2 , YCl2 , YCl3 are formed. a. What is the specialty of the oxidation number of Y, compared to that of X?b. Explain the reason for this, on the basis of the subshell based electronic configuration.

Answer»

a. Element X has constant oxidation state. Y shows variable oxidation states.

b. X₂₀ = 1s² , 2s² , 2p⁶ , 3s² , 3p⁶ , 4s²

X₂₆ = 1s², 2s² , 2p⁶ , 3s² , 3p⁶ , 4s² , 3d⁶

Y is a transitional element. In chemical reactions only two elections in ‘ s’ subshell or besides ‘s’ subshell electrons ‘d’ sub shell electrons also take part

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