10.3 is good the correct rounding of three sig figures
Answer:
the answer is the second choice actual force
Answer:

Explanation:
Manganese is the element of group 7 and forth period. The atomic number of Manganese is 25 and the symbol of the element is Mn.
The electronic configuration of the element, manganese is -

To form
, it will lose 3 electrons from the valence electrons and thus the configuration of the ion is:-

What is the empirical formula of a compound that contains 43.38% sodium, 11.33% carbon, and 45.29% oxygen?
Na2CO3