What is the electron affinity for Li?

Z Element Electron affinity (eV)
3 Li 0.618 049(22)
4 Be -0.5(2)
5 B 0.279 723(25)
6 12C 1.262 122 6(11)

Does Li have a positive electron affinity?

An atom of Lithium in the gas phase, for example, gives off energy when it gains an electron to form an ion of Lithium. … This affinity is known as the second electron affinity, and these energies are positive. Halogens have the highest electron affinities among all elements.

Is Li negative electron affinity?

It is easier to lose their valence electrons because metals’ nuclei do not have a strong pull on their valence electrons. Thus, metals are known to have lower electron affinities. This trend of lower electron affinities for metals is described by the Group 1 metals: Lithium (Li): -60 KJ mol.

Why is the electron affinity of Li greater than be?

Therefore, lithium has an incompletely filled 2s subshell while beryllium has a filled subshell. Lithium can affinity to receive electrons in 2s sub-shell but for beryllium, a still higher energy 2p level. Hence beryllium resists to gaining extra electrons in higher energy levels or 2p orbitals.

What is the lowest electron affinity?

What is the lowest electron affinity? Metals are more likely to lose electrons than they are to gain them. Of the metals, mercury has the lowest electron affinity.

How do you find the lowest electron affinity?

Which has more electron affinity Li or B?

The electron added in the Lithium goes into the 2s subshell which being close to the nucleus experiences greater electrostatic force of attraction compared to the one going into the 2p subshell of the Boron atom which is relatively more diffused( spread out in space ) .

Which has highest electron affinity?

Which Element Has the Highest Electron Affinity? Chlorine has the highest electron affinity among the elements. Its high affinity can be attributed to its large atomic radius, or size. Because chlorine’s outermost orbital is 3p, its electrons have a large amount of space to share with an incoming electron.

Which has higher electron affinity boron or lithium?

In general, electron affinity increases across a period. Then why is the electron affinity of boron (27 kJ/mol) less than that of lithium (60 kJ/mol)?

Which is the correct order of electron affinity A Li Mg Na Li Na C Li Na mg/d Li Na Mg?

Li > Na > Mg.

Which of the following has highest electron affinity Na Li?

F- has the highest electron affinity among the follwing this is because the electron affinity decreases down the group but it increases along the period.

Why does lithium have higher electron affinity than sodium?

Because the attraction between that electron and its nucleus is less because it’s a larger atom. So smaller atoms generally are going to have more electron affinity. Which is why lithium has more electron affinity than sodium.

Which has more electron affinity Na or Mg?

Addition of one electron to the 3s-orbital of Na leads to a comparatively stable electronic configuration with fulfilled orbital. … additional energy is required for addition of electron to outermost shell of Mg i.e., this process is endothermic and thus the valueof electron affinity of Mg is positive.

Which element has zero electron affinity in the third period?

Argon is a noble gas from period 3, hence it would have zero electron affinity.

Which of these is not correct with reference to the elements of group 18?

Group 18 element posses the maximum ionisation energy too as they have a stable octet structure. This is also related to their atomic size. … It is because of complete octet of these noble gas they have zero valency. Hence, option (d) Valency is variable isn‘t correct.

Which element has the most negative electron affinity be li ne o?

Chlorine has the most negative electron affinity.

Why does P have a lower electron affinity than Si?

However, in order to form P-, the extra electron must pair up with an existing electron in one of the p-orbitals. The extra repulsion involved leads to the electron affinity being lower for P than for Si despite the higher nuclear charge.

How do you find electron affinity?