Which one of the following is smallest in size
?
n3- o2- f- na

Answers

c (diamond),

sio2 (quartz)

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.  

FOR 1ST QUESTION WE GO BY RATIO OF Z/E

AND IONIC SIZE IS INVERSLY PROPORTIONAL TO Z/E

SO WHOSE Z/E IS less WILL BE BIGGER

AND WHOSE Z/E IS MORE WILL BE SMALLER

(Z=atomic no )(e=no. of electrons in the ion )

In second question OPTION IS A

because size of inert gases are greatest in their respective period

in third again go for z/e ratio and you will get the answer .

F- is the smallest. Na is largest, so that would not be correct 100%
F- is the smallest because it accepts 1 electron 2 make its atomic number 10 making it have jst 2 orbitals but O²-,N³- and Na have their atomic number to be 18,17 and 11 respectively with 3 orbitals..
hope this helps *winks*


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