Question Completion Status: Which of the following statements is not true about the element calcium?
A) It is a metal.
B) It is an alkaline earth metal.
C) It is in period 4.
D) It has chemical and physical properties most similar to silver.
E) It is in group 2A.

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particle   p is an electron and particle q is a neutron

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.