the total number of electron present in 5.6g of sodium is
Answers
Answered by
0
Given : given mass of sodium (Na)=5.6gm
To find : no. Of electrons
Sol : as we know mass of Na is equal to 23 gm .
No. Of moles = given mass /molar
mass
= 5.6 gm /23gm
= 1/5 mol
Now,
No. Of electrons = n × NA × x
(Here n = 1/5
NA = 6.022 ×10^23
x = Na has electron confihuration 2/8/2 so ot has total electron 12 )
= 1/5×6.022×10^23×12
=144.528 electrons
Answer : 144.528×10^22 electrons are present in 5.6 gm of sodium
Similar questions