05-03-2015
Chemistry

Answered

19.B is the chemical symbol of which element?

Boron

Boring

Balkite

Beryllium

20.Zinc (Zn) has an atomic number of 30 and an atomic mass of 65. How many neutrons does a stable atom of Zn have?

30

35

60

95

Verified Answer :

Anonymous Anonymous

05-03-2015

Number 1 is..Boron
Number 2 is ..35

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