Well, knowing that group 2A elements are metals, and metals lose electrons to gain a full electron shell, we can eliminate B and D. Knowing that these are 2 electrons, that the group 2A element provides to another atom, to form an ion.
The solution is C. Lose 2 electrons.
Rust is the chemical product that results when iron reacts with oxygen.
Answer: At very low temperatures, gases expand less for a given pressure change than they do at high temperatures.
Explanation:
Answer:
The Lewis structure is shown below.
Explanation:
In the molecule given, the central atom is the carbon (C), which must do 4 bonds. The other carbons at the molecule must do 4 bonds too, and the hydrogens must do only one bond. So, the central atom does a double bond with each carbon, and each carbon does a single bond with the two hydrogens they're bonded.
After the bonds, the central carbon has no lone pairs of electrons, so the geometry of the molecule must be linear, as shown below.
Answer:
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Explanation: