Why does reactivity increase going down a group on the periodic table?

All group 1 metals have one electron in its outer shell. As we go down the group, the atom gets bigger... Therefore, the attraction between the nucleus and the last electron gets weaker. This makes it easier for the atom to give up the electron which increases its reactivity.

Explanation:

a) the particles of the chair are strongly held together.

warm front forms when a moist, warm air mass slides up and over a cold air mass. as the warm air mass rises, it condenses into a broad area of clouds. a warm front brings gentle rain or light snow, followed by warmer, milder weather.

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