How many lone pairs of electrons are on the indicated oxygen atom? 
Definitions:
Diversifiable Risk
The risk that can be reduced or eliminated from a portfolio through diversification, as opposed to non-diversifiable risk.
Rational Investor
An individual who makes investment decisions based on logical analysis, aiming to maximize returns while minimizing risks.
Security Market Line
Represents the relationship between the risk of an investment and its expected return, illustrating the risk-return trade-off in capital market theory.
Market Risk Premium
The extra return expected by investors from holding a risky market portfolio instead of risk-free assets.
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