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Answer:
The answer to your question is below.
Explanation:
Question 10.
Halogens are a group in the periodic table (VIIA), these elements have seven electrons in their outermost shell. Examples of halogens are Chlorine, Fluorine, and Bromine.
The correct answer is the first one.
Question 2.
The answer is false, in a neutral atom, the number of protons and electrons are equal but the number of neutrons is different.
Question 3
Nine is the atomic number of fluorine
Question 4
Group is correct
Question 5
True, elements with similar electron configurations are in the same group, so they have similar chemical and physical properties.
Question 6
Alkali metals and have one valence electrons.
Question 7
True
Question 8
8, elements with 8 electrons in their outermost shell are stable.
Question 9
6, due to oxygen has 6 valence electrons it is in group VIA.
Answer:
I think it's A, I'm not sure though
Answer:
95m
Explanation:
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With a really big ruler? No, not quite. There are two ways in which scientists quantify the size of earthquakes: magnitude and intensity. You have probably heard of the Richter scale which is still used for small earthquakes, but most large earthquakes are now commonly reported using the moment magnitude scal