"They are harder than alkali metals" is a characteristic property of the alkaline earth metals.
<u>Option:</u> C
<u>Explanation:</u>
The strength of metallic bond is stronger in alkaline earth metals than alkali metals because of the existence of 2 electrons in its outermost or valence shell relative to alkali metal which has only 1 electron in valence shell. Thus alkaline earth metals are therefore harder than the alkali metals.
They are considered alkaline since they formulate solutions that have a pH higher than 7, rendering them alkaline or bases. Radium is produced by uranium decay, not all alkaline elements are radioactive. It's very toxic, and the handling is risky. Calcium and magnesium are essential for animals and plants.
Gold cyanidation ( which is also known as the cyanide process or the MacArthur-Forrest process) is a hydro-metallurgical technique for extracting gold from low-grade ore by converting the gold to a water-soluble coordination complex. It is the most commonly used leaching process for gold extraction
B the color of the metal . Hope this helps
Answer:
Explanation:
1 moles Gallium to grams = 69.723 grams
2 moles Gallium to grams = 139.446 grams
3 moles Gallium to grams = 209.169 grams
4 moles Gallium to grams = 278.892 grams
5 moles Gallium to grams = 348.615 grams
6 moles Gallium to grams = 418.338 grams
7 moles Gallium to grams = 488.061 grams
8 moles Gallium to grams = 557.784 grams
9 moles Gallium to grams = 627.507 grams
10 moles Gallium to grams = 697.23 grams
