Answer:
The answer should be I and III
Sr is the atom that has the lower ionization energy.
Ionization is the procedure by using which ions are shaped by the gain or loss of an electron from an atom or molecule. If an atom or molecule gains an electron, it becomes negatively charged (an anion), and if it loses an electron, it will become definitely charged (a cation). energy may be misplaced or received within the formation of an ion.
Ionization or Ionisation is the manner by means in which an atom or a molecule acquires a negative or superb price through gaining or dropping electrons, regularly along with other chemical modifications. The resulting electrically charged atom or molecule is referred to as an ion.
while sodium and chlorine integrate to make salt, the sodium atom offers up an electron resulting in a wonderful charge, while chlorine receives the electron and will become negatively charged as an end result.
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En un cambio físico, la naturaleza de la sustancia, las partículas que la componen y el número de partículas permanecen sin cambios.
En un cambio químico, las propiedades de las nuevas sustancias son diferentes de las originales, las partículas son diferentes y el número de partículas puede cambiar.
Si bien la distinción entre cambio físico y químico es útil, debería verse más como un continuo.
Las reacciones químicas pueden revertirse, pero esto puede resultar difícil en la práctica.
