forming ions Flashcards

1
Q

when are atoms stable?

A

when they have full outer shells

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2
Q

why do atoms bond?

A

so they can gain/lose electrons to become stable

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3
Q

if a metal and non-metal bond from where to where are the electrons transferred?

A

from the metal to the non-metal

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4
Q

how do ions form; what is positive and what is negative?

A

if electrons are transferred then they gain a positive or negative charge
metal ions are positive (lost electrons), non-metal ions are negative (gained electrons)

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5
Q

what is bonding between metals and non-metals called?

A

ionic bonding

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6
Q

how do you work out the charge on a metal ion?

A

from its group number ie 1=+1, 2=+2, 3=+3, 4=+/-4, 5=, 6=-2, 7=-1

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