ICSE Class 9 Answered
1.State two pieces of qualitative information conveyed by symbol Na
2. State two pieces of quantitative information conveyed by symbol Mg.
Asked by palashsoni4700.9sdatl | 23 Apr, 2020, 07:46: AM
Expert Answer
1. Qualitative information conveyed by symbol Na:
Symbol repesents the identification of the element.
Symbol Na represents that it is a sodium metal.
2. Quantitative information conveyed by symbol Mg:
Symbol Mg represents mass number, atomic number of the element.
That is it gives number of protons, electrons and neutrons present.
Symbol Mg represents: Atomic no. - 12
Mass no. - 24
Number of electrons: 12
Numbr of protons: 12
Number of neutrons = 12
Answered by Varsha | 23 Apr, 2020, 10:46: AM
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