Answer:
false
Explanation:
Hope the answer was usefull for us
Answer:
it is a gas not a mixture
When we take a look at the periodic table of elements we can see that Fluoride has the atomic number of 9. What this means is that this atom has 9 protons and 9 electrons. Since the fluorine ion has a negative charge of one, that means that the fluorine ion has one more electron than the fluorine atom.
So, the F- ion has 9 protons and 10 electrons.
The answer is B
In the word “homo” it means same and since the question keeps repeating same it should be homogeneous.
Answer:
They are in the same family/group.
Explanation:
Both Ca and Sr are Group 2 elements, so can be expected to have similar chemical properties. Strontium would be expected to be chemically similar to calcium because they are in the same family/group.