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The atomic number of an atom indicates the number of protons that are present.

Which sublevel has the lowest energy?

Why have legumes been planted as a cover crop to improve the soil fertility of a field?

What would be the “r” value or intrinsic rate of growth of a population that had 50 births and 40 deaths per year out of 1000?

What is the term for movement of water and nutrients between biotic and abiotic portions of an ecosystem?

Sulfur (S) is one of the representative elements.

The halogens, Group VII A (17), have the lowest ionization energies of any group in the periodic table.

A 6.30 percent coupon bond with 16 years left to maturity is offered for sale at $977.12. What yield to maturity is the bond offering? (Assume interest payments are semiannual.) (Round your answer to 2 decimal places.)

What annual rate of return is earned on a $1,000 investment when it grows to $2,300 in six years? (Do not round intermediate calculations. Round your answer to 2 decimal places.)

Bohr was the first to use the term “orbit” to explain the fixed energy levels of electrons.