They lose their 4s electrons before their 3d electrons
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What is the electron configuration of a chromium atom and Copper atom?
Look in revision guide
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what do you have to do to take an eelctron out of its outershell?
overcome the attratcion between the negativ eelctron and the positvely charged nucleus. to do this need to add energy. thius IE alkways pos number
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What is the 1st ionisation energy
Amount of energy required to remove 1 mole of electrons from 1 mole of atoms in gaseous stae
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the lower the Ionisation Energy.....
easier it is to remove the outer electron and form an ION
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Why is ionisation energy an endothermic process
Energy is put in to ionise an atom/molecule therefore need other,rich process
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What is the 2nd ionisation energy
Amount of enrgy required to remove 1 mole of electrons from 1 mole of ions in gaseous state
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What is there each time you remove an electron s
Each time you remove an electrons there's a successive ionisation energy
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What 3 factors affect ionisation energy?
Distance form nucleus , nucleus charge, shielding
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When do big jumps in ionisation energys hapoen
When a new shell is broken into- an electron is being removed form a shell closer to the nucleus
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Explain why nucleus charge affects I.E.?
More protons in nucleus means there is a more positively charged nucleus therefore stringer attraction for electron so as charge increase I.E. increases
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Explain why shielding affects I.E.?
As number of electrons between outer shell and nucleus increases . Outer electrons feels less attraction towards nucleur charge . Gertaer shielding means less energy to remove outer electrons thus LoweR IE
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Explain why Disthace from Nucleus affects I.E.
Electrons close to the nucleus much more strongly attached to than ones further away THUS as distance increase I.E. decreases
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What does a high IE mean
High IE means high attraction between electrons and nucleus so more energy needed to remove electron
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WHY IS 2ND IONISATION EENRGY USUALYY HIGHER THAN 1ST IONISTAION EENRGY
it always takes more energy to remove an electron from a positively charged ion than from a neutral atom.
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Other cards in this set
Card 2
Front
What happens when's transition metals become ions
Back
They lose their 4s electrons before their 3d electrons
Card 3
Front
What is the electron configuration of a chromium atom and Copper atom?
Back
Card 4
Front
what do you have to do to take an eelctron out of its outershell?
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