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Harman [31]
3 years ago
11

This one too, please?

Biology
2 answers:
velikii [3]3 years ago
7 0

Answer:

1, group 1

2 group 7

3 group 2

4 D

5 B

6 A

Anna71 [15]3 years ago
7 0

Answer:

7. A 1

8. C 17

9. B 2

10. (d) C and D

11. (b) reactivity

12. (a) corrosion

13. (c) activity series

Explanation:

7. , 8, and 9,

Group 1 elements are named as alkali metals

Group 2 elements are known as alkaline earth metals

group 17 metals are known as halogens

10.

Na and Xe have one valency whereas the other two elements have variable valency which is a property of transition metals so the answer is (d) C and D

11.

It;s the definition of reactivity

12.

Definition of corrosion

13.

definition of activity series

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