How do you express a number in scientific notation? A. write the number along with the units associated with it
B. write the number as a decimal multiped by a power of 10
C. write the number as a fraction in a scientific equation
D. write the number in units of Avogadro's number

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What is the formula that this ionic compounds could form sr2+p3-o2-

The atomic radius of sodium is 186 pm and of chlorine is 100 pm. the ionic radius for na+ is 102 pm and for cl– is 181 pm. in going from na to cl in period 3, why does the atomic radius decrease while the ionic radius increases? a. the inner electrons in the sodium cation shield its valence electrons more effectively than the inner electrons in the chloride anion do. b. the inner electrons shield the valence electrons more effectively in the chlorine atom than in the chloride anion. c. the outermost electrons in chloride experience a smaller effective nuclear charge than those in the sodium cation do. d. the outermost electrons in chloride experience a larger effective nuclear charge than those in the sodium cation do. e. monatomic ions are bigger than the atoms from which they are formed.

What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5