Answer:
D. His device would not be successful because radio waves do not have enough energy to kill the bacteria.
Explanation:
Elements of Group 1 and group 2 in the periodic
table contain elements so reactive that they are never found in the free state
<u>Explanation</u>:
The metals in group 1 of periodic table consisting of 'alkali metals' which include lithium, potassium, sodium, rubidium, Francium and caesium. They are highly reactive because they have low ionisation energy and larger radius. The group 2 metals consist of 'alkaline earth metals' which include calcium, strontium, barium, beryllium, radium and magnesium. These alkaline earth metal have +2 oxidation number, hence are highly reactive.
These both group metals are mostly reactive and so are never found in a free state. When they are exposed to air they would immediately react with oxygen. Hence, are stored in oils to avoid oxidation.
How many atoms of oxygen are represented in 2Fe(NO3)2?
Answer: 12
Maybe it’s c I’m not sure
Answer:
its hto-567-st-3=56+78=103
Explanation:
so103 is yo answer
