Question

2. list up the name
of the
element from atomic number
01 To 20
and reactivity Series
of the
elements​

Answer 1

Answer:

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Answer 2

Explanation:

1 hydrogen

2 helium

3 lithium

4 beryllium

5 boron

6 carbon

7 nitrogen

8 oxygen

9 fluorine

10 neon

11 sodium

12 magnesium

13 aluminium

14 silicon

15 phosphorus

16 sulfur

17 chlorine

18 argon

19 potassium

20 calcium

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