Which elements need to absorb energy when they gain electrons?

Which elements need to absorb energy when they gain electrons?

Metals: Metals like to lose valence electrons to form cations to have a fully stable octet. They absorb energy (endothermic) to lose electrons. The electron affinity of metals is lower than that of nonmetals. Nonmetals: Nonmetals like to gain electrons to form anions to have a fully stable octet.

Which group has the highest electron affinities?

Nonmetals

Which element releases the most energy after gaining an electron to become an anion?

Nonmetals have more valence electrons and increase their stability by gaining electrons to become anions. The electronegativities of nonmetals are generally high. Electronegativities generally increase from left to right across a period.

Which factor would be most likely to shrink the size of an atom’s electron cloud?

(A). Forming a positive ion is most likely to shrink the size of an electron cloud because the imbalance of protons causes a greater electrostatic…

Which factor would most likely shrink an atom’s radius?

Periodic Table Row. In the periodic table, the atomic radius of elements tends to decrease as you move across a row from left to right. The number of protons increases left to right, leading to a greater attractive force in the nucleus. The stronger attraction pulls the electrons closer in, reducing the radius.

How can you reduce the size of an electron cloud?

The added protons in the nucleus of an atom will pull the electron cloud more tightly inward and shrink the size of the electron cloud which means you have a smaller atomic radius.

Do large atoms hold their electrons very tightly?

Large atoms hold their electrons very tightly. Large atoms tend to have a low ionization energy and a low electron affinity.

Why would certain atoms more strongly hold onto their electrons?

The same is true with atoms. Some have a strong hold on all their electrons while others have a very weak hold. Since the attractive effects of the nucleus decrease with distance, a larger atom would have a weaker grip than a smaller atom.

Can metals hold onto and attract electrons?

Within a compound, metal atoms have relatively low attraction for electrons, as indicated by their low electronegativities. Since the ionization energy decreases going down a group (or increases going up a group), the increased ability for metals lower in a group to lose electrons makes them more reactive.

What element has the largest metallic property and why?

cesium

Which one of the following is least metallic?

Thus, the elements Helium, Neon, Fluorine, and Oxygen are logically the least metallic.

Which one of the following metal is most metallic?

bismuth

Which of the following has the maximum non metallic character?

fluorine

What is the least non metallic element?

Iodine