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sara12345 Group Title

as we move from left to right across a period how density changes

  • 2 years ago
  • 2 years ago

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  1. sara12345 Group Title
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    1. increases 2. decreases 3. remains constant 4. no particular trend

    • 2 years ago
  2. UnkleRhaukus Group Title
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    density is mass per unit volume

    • 2 years ago
  3. .Sam. Group Title
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    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.

    • 2 years ago
  4. sara12345 Group Title
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    mass increases but radius decreases since d = m/V density increases i get it thank you very much !

    • 2 years ago
  5. UnkleRhaukus Group Title
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    i do not agree with options 1,2,3,4

    • 2 years ago
  6. sara12345 Group Title
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    but the right side we have gases but here i think they're asking only for atom i hope, not the molecule level

    • 2 years ago
  7. sara12345 Group Title
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    why

    • 2 years ago
  8. UnkleRhaukus Group Title
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    http://periodictable.com/Properties/A/Density.st.html

    • 2 years ago
  9. sara12345 Group Title
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    oh it shows left and right groups have least density

    • 2 years ago
  10. sara12345 Group Title
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    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

    • 2 years ago
  11. sara12345 Group Title
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    looks non-metals have less density again breaking the general increasing density trend

    • 2 years ago
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