Hey there! Sign in to join this conversationNew here? Join for free
x Turn on thread page Beta
    • Thread Starter
    Offline

    3
    ReputationRep:
    Hi guys, just wanted to ask why an electron is written with an atomic number of -1 ?
    Offline

    21
    ReputationRep:
    (Original post by nhtw)
    Hi guys, just wanted to ask why an electron is written with an atomic number of -1 ?
    Electron cannot be denoted with an atomic number because it is not an atom, it's a particle. I assume you mean electronic charge charge ratio?
    Offline

    15
    ReputationRep:
    Atomic number is for elements. However in nuclear equations, the same notation is used. It tells you the charge. This is because the electron's antiparticle, the positron is also written with the letter e. The difference is that the positron is positive, so it is writted with a plus sign instead.

    This all makes a lot more sense when you start looking at nuclear equations. The top number and bottom number on both sides of the equation need to balance out. I suggest you google some nuclear equations for alpha and beta decay.
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: October 29, 2015
Poll
Do you agree with the proposed ban on plastic straws and cotton buds?

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.