Respuesta :

Touya03

Answer:

Barium is lower in group 2 than magnesium, so number of shells increase. The valence electron is further from the nucleus making it easier to lose electrons.

Explanation:

Barium has more electrons shells than calcium, so the nuclear shielding is stronger, and the outmost electrons are further away from the nucleus. This results in a weaker attractive force between the electron and the nucleus, so a smaller energy is required to remove it.

ingramjazmine9

Answer:

Barium has a greater radius than magnesium

Explanation:

Barium and magnesium are two elements which belong to the same group, group 2A. This means that the two elements have two valence electrons in their outer shell.

The difference is, however, since barium

is lower in group than magnesium, it has

more electron shells than magnesium and,

therefore, its radlus is greater. The attraction

force between the nucleus and the valence

electrons in barium is lower as a result, as force

is inversely proportional to distance. Hence, a

lower amount of energy is required to remove

the valence electrons from barium.

Explanation:

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