ANSWER: no two elements would have the same number of protons, hope this helps
12.5% of strontium-90 would remain in a sample after three half-lives have passed. Half-life automatically means 50% of the original amount would remain.
What the definition of each period and group and element and every valence electron
The atom that is most likely to lose an electron is lithium (Li).
<h3>What is electronegativity?</h3>
Electronegativity is the tendency, or a measure of the ability, of an atom or molecule to attract electrons when forming bonds.
On the other hand, electropositivity is the tendency of an atom to release electrons to form a chemical bond.
Chemical elements that lose electrons become positively charged while elements that gain electrons become negatively charged.
Metals are most likely to lose electrons to form positive ions. Examples of metals are lithium in group 1, calcium in group 2, aluminium in group 3 etc.
Learn more about electropositivity at: brainly.com/question/17762711
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