Covalent Bonding Marcela Danna

What two types of atoms make a covalent bond?

• 2 Nonmetals
• 1 Nonmetal and 1 Metal
• 2 Metals
• 2 Noble Gases

How are covalent bonds explained?

• When one atom takes the other atom's electron
• When the atom shares an electron with an another atom
• When the two nucleus merge
• When the neutrons leave the nucleus

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In chemical compounds, covalent bonds form when

• the electronegativity difference between two atoms is very large.
• electrons are completely transferred between two metals.
• pairs of electrons are shared between two nonmetal atoms.
• two nonmetal atoms are attracted to each other by opposite charges.

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Is carbon considered a metal or a non-metal?

• metal
• nonmetal
• other

Is Hydrogen considered a metal or a non-metal?

• Metal
• Non-metal

What region of the periodic table contains atoms that form covalent bonds?

• the left side
• the middle
• the right side
• top left

Valence electrons refers to the number of electrons in the __________ orbital of an atom.

• First

• Second

• Outermost

• None of the above

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NGSS.HS-PS1-2

How many electrons do atoms prefer to have in their valence orbital?

• 1

• 2

• 4

• 8

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Boron has 3 valence electrons. How many electrons does it need to be stable?

• 2

• 4

• 5

• 8

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Fluorine has 7 valence electrons. How many electrons is it going to need to be stable?

• 1

• 2

• 4

• 8

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NGSS.HS-PS1-2