QUES1 : WHICH OF THE FOLLOWING HAS LARGER SIZE AND WHY ?? GIVE REASON ALSO??
a} NA OR LI
b} BE OR MG
QUES2 ; WHAT HAPPENS WHEN ::
a} FES04 IS HEATED
b} LEAD NITRATE IS HEATED
c} AGEL IS KEPT IN SUNLIGHT...
IF U KNOW THEN ANSWER... OR SOMEONES WHO ARE MAD THEY ANSWER FOR GETTING POINTS... GO TO HELL...THANKZ IN ADVANCE................?? 50 points...
a} NA OR LI
b} BE OR MG
QUES2 ; WHAT HAPPENS WHEN ::
a} FES04 IS HEATED
b} LEAD NITRATE IS HEATED
c} AGEL IS KEPT IN SUNLIGHT...
IF U KNOW THEN ANSWER... OR SOMEONES WHO ARE MAD THEY ANSWER FOR GETTING POINTS... GO TO HELL...THANKZ IN ADVANCE................?? 50 points...
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reason is that due to the addition of electrons in their valence shell, the effective nuclear charge increases which decreases the size of an atom.
question 2
when FeSO4 is heated, then its colour changes into green due to the conversion of Fe2+ to Fe3+.
When Ag is kept in sunlight, then its colour changes into black.
a) on heating precious sulphate crystal lose water and anhydrous ferrous sulphate feso4 is formed.
b) Lead Nitrate on heating decomposes to lead monoxide Nitrogen dioxide and oxygen.