2) the basis of classification of elements is atomic masses. they arranged all the known elements known at that time in that increasing order of atomic masses.
3) hydrogen atom
5) 1 - Q
2 - P
6) gallium metal will melt as it's melting point is low and it is very soft..
hope it helps you...plzz mark it as a brainlest ans .
Answers & Comments
Answer:
1) option no. 3
2) the basis of classification of elements is atomic masses. they arranged all the known elements known at that time in that increasing order of atomic masses.
3) hydrogen atom
5) 1 - Q
2 - P
6) gallium metal will melt as it's melting point is low and it is very soft..
hope it helps you...plzz mark it as a brainlest ans .