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Name(a) three elements that have a single electron in their outermost shells,(b) two elements that have two electrons in their outermost shells.(c) three elements with filled outermost shells.(a) Lithium, sodium, potassium are all metals that react with waterto liberate hydrogen gas. Is there any similarity in the atoms ofthese elements?(b) Helium is an unreactive gas and neon is a gas of extremely lowreactivity. What, if anything, do their atoms have in common?Q.In the Modern Periodic Table, which are the metals among the first tenelements?By considering their position in the Periodic Table, which one of thefollowing elements would you expect to have maximum metalliccharacteristic?AsSeGeBeGa​

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Answer:

outermost shells.

(c) three elements with filled outermost shells.

(a) Lithium, sodium, potassium are all metals that react with water

to liberate hydrogen gas. Is there any similarity in the atoms of

these elements?

(b) Helium is an unreactive gas and neon is a gas of extremely low

reactivity. What, if anything, do their atoms have in common?

Q.In the Modern Periodic Table, whic are the metals among the first ten

elements?

By considering their position in the Periodic Table, which one of the

following elements would you expect to have maximum metallic

characteristic?

As

Se

Ge

Be

Ga

200
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