They have seven electrons in their valence shell, so halogens are very reactive.
Hope this helps! :)
Cars, aeroplanes, factories etc
Hey there!
Molar mass of CaCl₂:
Add the molar masses of each element multiplied by the amount of that element we have.
Ca: 1 x 40.078
Cl: 2 x 35.453
---------------------
110.98 grams
The molar mass of calcium chloride is 110.98 grams.
Hope this helps!
Covalent bonds is when polarity is formed
The rock cycle is referred to as cycle because it repeats over and over again. The definition of cycle is a series of events that are regularly related in the same order. So with the rock cycle they stay in the same order and repeat.
Hope this helps :)
