Which physical property of the alkali metal group decreases down the group

Melting and boiling point

Explanation:

For all group 1 elements, the melting and boiling point of the various members of the group decreases down the group. Hence, as the elements become heavier, they tend to have lower melting and boiling points.

Thus in moving from lithium to francium, there is a steady decrease in the melting and boiling points of elements down the group.

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates

the answer is 1260

you spend 7 hours in school for 1 school day with 5 school days in 1 school week with 36 school weeks in a school year.

7*5*36= 1260 it's all about multiplying