Question

Why would it take more energy to take 2 electrons from an atom?
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Answer 1

Answer:

in mathematical form

2=2×1

if we assume 1= e-

then for 1 we need 1=1×1

but for 2e- we need 2=2×1

therefore we will need more energy for 2 electrons than 1 (it is an rough expression for your understanding there are many other factors too you will learn ahead)

• THEORETICALLY, ASSUME ONE ELECTRON IS BEING PUSHED TOWARDS NUCLEUS OF ATOM BY INTERMOLECULAR FORCE "F"
• NOW,FOR 1 ELECTRON "F" = 1 SO FOR OTHER ATOM TO TAKE THIS ELECTRON IT WILL NEED 1 VALUE OF FORCE BUT IN CASE OF TWO THE FORCE OF 2 ELECTRONS WILL ADD THEMSELVES UP AND BECOME "2F"
• HERE THE ATOM WILL NEED 2×F FOR EXTRACTING TWO ATOMS.

HOPE YOU UNDERSTAND

Answer 2

Answer:

The second electron removed from the sodium atom is removed from an inner non-valence shell, which is closer to the nucleus, and thus more tightly held. It makes sense that this electron should require more energy to remove.

Explanation: