Two elements 'X' and 'Y' have the following configuration X= 1s2 2s2 2p6 3s2 3p6 4s2 Y= 1s2 2s2 2p6 3s2 3p5 The compound formed by the combination of 'X' and 'Y' will be

X= 1s2 2s2 2p6 3s2 3p6 4s2 ; valence=2Y= 1s2 2s2 2p6 3s2 3p5 ; valence=8-7=1Hence the formula is XY2.

Two elements 'X' and 'Y' have the following configuration X= 1s2 2s2 2p6 3s2 3p6 4s2 Y= 1s2 2s2 2p6 3s2 3p5 The compound formed by the combination of 'X' and 'Y' will be

X= 1s2 2s2 2p6 3s2 3p6 4s2 ; valence=2Y= 1s2 2s2 2p6 3s2 3p5 ; valence=8-7=1Hence the formula is XY2.

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Two elements 'X' and 'Y' have the following configuration
X= 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²
Y= 1s² 2s² 2p⁶ 3s² 3p⁵
The compound formed by the combination of 'X' and 'Y' will be

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XY₅

X₂Y₅

X₅Y₂

XY₂

answer is A.

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X= 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² ; valence=2
Y= 1s² 2s² 2p⁶ 3s² 3p⁵ ; valence=8-7=1

Hence the formula is XY₂.

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Two elements 'X' and 'Y' have the following configuration X= 1s2 2s2 2p6 3s2 3p6 4s2 Y= 1s2 2s2 2p6 3s2 3p5 The compound formed by the combination of 'X' and 'Y' will be

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Two elements 'X' and 'Y' have the following configuration
X= 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²
Y= 1s² 2s² 2p⁶ 3s² 3p⁵
The compound formed by the combination of 'X' and 'Y' will be