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First, let's check we understand the concept of the first ionisation energy. The term is defined as 'the energy required to remove a mole of electrons from a mole of gaseous atoms'. That is, for ea...

First start by giving the definition of first ionisation energy - the energy required to remove one mole of electrons from one mole of gaseous atoms to produce one mole of gaseous ions each with a +1 char...

i)As you move across a period the number of protons in the nucleus, and so the overall nuclear charge, increases. All extra electrons are roughly the same energy and distance from the nucleus. This means ...

The first ionisation energy is defined as, the amount of energy required to remove 1 mole of electrons from 1 mole of gaseous atoms to produce 1 mole <...