anonymous
  • anonymous
as we move from left to right across a period how density changes
Chemistry
  • Stacey Warren - Expert brainly.com
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schrodinger
  • schrodinger
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anonymous
  • anonymous
1. increases 2. decreases 3. remains constant 4. no particular trend
UnkleRhaukus
  • UnkleRhaukus
density is mass per unit volume
.Sam.
  • .Sam.
Density increases. Atomic radius decreases from left to right across a period because: 1) Electrons are being "added" into the same shell, (you know that the shell number doesn't increase across a period) 2) The proton number and number of electrons increases across a period, this causes greater attractive force between positive and negative charges, resulting in decrease in atomic radius as mass increases, therefore greater density.

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anonymous
  • anonymous
mass increases but radius decreases since d = m/V density increases i get it thank you very much !
UnkleRhaukus
  • UnkleRhaukus
i do not agree with options 1,2,3,4
anonymous
  • anonymous
but the right side we have gases but here i think they're asking only for atom i hope, not the molecule level
anonymous
  • anonymous
why
UnkleRhaukus
  • UnkleRhaukus
http://periodictable.com/Properties/A/Density.st.html
anonymous
  • anonymous
oh it shows left and right groups have least density
anonymous
  • anonymous
some trend still exists, as we move from left to right, s->p->d, upto the last group in d block, the density is increasing
anonymous
  • anonymous
looks non-metals have less density again breaking the general increasing density trend

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