Question

A scientist is trying to determine the identity of an element. It is highly reactive in water and forms an ionic bond with chlorine. It is also very shiny. The element is most likely
A)from group 17
B)from group 1
C)from group 15
D)a noble gas

Mrs. Sue Is it C?

Answer 1

Definitely it isn't a noble gas since noble gas are stable and unreactive. They can still form compounds with other elements though.
Group 15 is also group 5A (Nitrogen, Phosphorus, etc.), and Group 17 is also group 7A (Fluorine, chlorine, etc.). Elements in these groups do not usually form ionic bonds; they are more on forming covalent bonds since they're non-metals.
Thus, that leaves us with B. from Group 1 (Hydrogen, Lithium, etc.). They are metals (except Hydrogen) which react violently with water, and they form ionic bonds, for they lose outer electrons easily.

Hope this helps~ `u`

Answer 2

Thank you Jai! Your a life saver!!!!!!!!! :)

Answer 3

1. b
2. a&d
3. b&d&e
4. d
5. c&d&e
6. a&b
7. c
8. b
9. b
10. d