Answer:
it holds reactant molecules in a good position for then to react
Answer:
Alkaline earth metals
Explanation:
Group 2 has 2 valence electrons that they lose when being ionized, thus making their charge 2+.
The number of proton in the nucleus of an atom is its Atomic Number.
8.9 g/cm3 since density equals mass/volume or m/v you just divide 89 by 10 to get 8.9
Answer is: lithium is the least reactive and potassium is the most reactive of the three alkali elements.
<span>The </span>reactivity<span> of the alkali metals increases down the group because one valence electron (I group of Periodic system of elements) is farther away from nucleus and attraction force between electron and proton is weaker.</span>
