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Question:

how many valence electron do Li and K have?

how many valence electron do Li and K have?

Answer:

Li and K have one valence electron eachI hope you can follow what I'm sayingThis would be easier if I had a periodic table to show youTry to look at one while you read thisA good way to work this out for the first 20 elements in the table is to look at the column they're in (that's the vertical)In the first column (Hydrogen, lithium, sodium, potassium etc.) all elements have one valence electronIn the second column, (berrylium, magnesium, calcium etc.) all elements have 2 valence electronsNow jump over the so called transition metals (copper to zinc) to the third column (boron + aluminium) where they all have 3 valence electronsThis continues to the last column where the noble gases are (helium, neon, argon etc) where they all have 8 valence electrons.

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