INI.
C135
Give short answer for the following question:-
1. What led to modern periodic table?
2. From the Symbol 17
a) Write the mass number
b) Write the number of neutrons.
Answers
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0
Answer:
do you have a few minutes to talk to you about it when I get home I will send you
Answered by
1
Answer:
In addition, Moseley predicted the existence of two more undiscovered elements, those with the atomic numbers 72 and 75, and gave very strong evidence that there were no other gaps in the Periodic Table between the elements aluminium (atomic number 13) and gold (atomic number 79).
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