Asked by j

How do we find the number of neutrons in an atom?
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Add the atomic number and mass number together
Subtract the number of electrons from the number of protons
Subtract the number of protons from the mass number
Answered by j
Which of the following does the atomic number of an atom or element represent?
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The number of protons in the atom
The number of neutrons in the atom
The number of particles in the nucleus of the atom
Answered by j
A molecule of ethanol has two carbon atoms, six hydrogen atoms, and one oxygen atom. A ball-and-stick model of a molecule of ethanol is made from the following components:

one red ball
two black balls
six white balls
eight sticks

What do the white balls in this model represent?
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Carbon atoms
Bonds between atoms
Hydrogen atoms
Answered by j
Which term describes the repeated arrangement of the same molecule?
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bonds
extended structure
molecular model
Answered by j
Use the periodic table to answer the question.

Which Statement about magnesium [Mg] and calcium [Ca] is correct?

They are both classified as noble gases.
They both have the same number of valence electrons.
They both have the same number of electron shells.
Answered by j
What property do elements in group 18 [or 8] most likely share?
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They are silver in color.
They are malleable.
They have low or no reactivity.
Answered by j
hat type of molecular model is represented in the diagram below?
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Captionless Image
Lewis Dot Structure
Ball and stick
Space-fill
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