X and Y arenon mtalsin whichM shell is valence shell . Y is precedent to X . X shows uninegative valence . Identify the formulae of the compounds formed when X and Y react with divalent metal M.

X and Y arenon mtalsin whichM shell is valence shell . Y is precedent

1.	X and Y arenon mtalsin whichM shell is valence shell . Y is precedent to X . X shows uninegative valence . Identify the formulae of the compounds formed when X and Y react with divalent metal M.
Answer» `MX_(2),MY` `MX,MY_(2)` `M_(3)X_(2),M_(2)Y_(3)` `M_(2)X_(3),M_(3)Y_(2)` Solution :Electronic configuration ofX is 2 , 8 , 7 Electronic configuration of Yis 2 , 8 , 6 `:.` VALENCIES of X and Y are 1 and 2 respectively. `M^(+2)X^(-)""M^(+2)Y^(-2)` `MX_(2) "" MY`