Advertisement
If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)
Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie
Hi there,
There is an issue with role permissions that is being worked on at the moment.
If you are having trouble with access or permissions on regional forums please post here to get access: https://www.boards.ie/discussion/2058365403/you-do-not-have-permission-for-that#latest

Chemistry Help!!!!!

  • 26-06-2005 2:01am
    #1
    chemgirl01
    Closed Accounts Posts: 1 ✭


    :D Can anyone answer these Chemistry problems? Please help!!

    Select atom w/ highest electronegativity.
    a. O or b. P

    Select the atom w/ lowest ionization energy.
    a. Rb or b. K

    Select atom w/ highest chemical reactivity.
    a. Ca or b. Ba


Comments

  • #2
    tribulus
    Closed Accounts Posts: 3,635 ✭✭✭tribulus


    chemgirl01 wrote:
    :D Can anyone answer these Chemistry problems? Please help!!

    Select atom w/ highest electronegativity.
    a. O or b. P

    Select the atom w/ lowest ionization energy.
    a. Rb or b. K

    Select atom w/ highest chemical reactivity.
    a. Ca or b. Ba

    Q1: O link

    Q2: Rb
    link

    Q3: Ba will have more "shells" of electrons around it than Ca. This provides a shielding effect from the attractive forces of the nucleus (more so than Ca)
    and so will have higher reactivity than Ca


  • #3
    Capt'n Midnight
    Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 93,552 Mod ✭✭✭✭Capt'n Midnight


    Stop asking for you homework to be done :D
    Or at least show that you have made some attempt and are stuck after trying.

    The answers to the first two are in the back of ye olde log tables
    tribulus wrote:
    Q3: Ba will have more "shells" of electrons around it than Ca. This provides a shielding effect from the attractive forces of the nucleus (more so than Ca)
    and so will have higher reactivity than Ca
    For the halogens and other atoms that accept electrons to form ionic bonds the shielding effect makes them LESS reactive.


  • #4
    nesf
    Registered Users, Registered Users 2 Posts: 27,644 ✭✭✭✭nesf


    Capt'n Midnight wrote:
    Stop asking for you homework to be done :D
    Or at least show that you have made some attempt and are stuck after trying.

    Meh, it's outside of the school year, so I don't see the problem with her asking :)

    That is, so long as she looks at the links and learns how to get to the answer.


Advertisement