Lithium, a Group I element, reacts with fluorine, a Group VII element, to form lithium fluoride.
Lithium fluoride is an ionic substance.
Which row describes how the ions are formed from the atoms?
1 )
lithium atom: gains an electron / fluorine atom: gains an electron
2 )
lithium atom: gains an electron / fluorine atom: loses an electron
lithium atom: loses an electron / fluorine atom: gains an electron
4 )
lithium atom: loses an electron / fluorine atom: loses an electron
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