Answer:
Chlorine (Cl)
Explanation:
The equation would be:
→ 
This is because no atom is lost in a reaction. Chlorine would be the missing chemical as it is on the other side of the equation and needs to be accounted for on the products side.
The increase in the number of atoms allows the strong positive charge of the nucleus to increase. Thus, due to the number of positive protons increasing in the nucleus, the positive charge increases. On the negatively charged electron cloud, the high positive charge of the nucleus has a strong tug.
Answer:
Cl is more likely to than Na
Explanation:
The question asks for the element more take up an electron from the other
The ability of an atom to take take or give electrons in a chemical reaction, depends on its electron affinity and ionization energy, respectively
Chlorine, Cl, has the highest electron affinity in the periodic table which makes it attract electrons more towards itself
Sodium, Na, has a low ionization energy (about 2/5 of that of chlorine) than chlorine, Cl, making sodium more readily able to give its valence electron in a reaction
Therefore, Cl is more likely to take up an outer electron from Na.
Answer:
group 1 - cations charge +1
group 7 - anions charge -1
Explanation:
Group 1 has one valence electron and will lose one electron to complete the octet.
Group 7 has 7 valence electrons and will accept an electron to complete the octet.
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