How many electrons arin thinnermost electron shell of a phosphorus atom?
A) 1
B) 2
C) 3
D) 5
E) 8
Correct Answer:
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Q32: How many electrons arin thoutermost electron shell
Q33: Radioactivisotopes have
A)excess electrons.
B)excess protons.
C)excess neutrons.
D)insufficient neutrons.
E)insufficient protons.
Q34: _ bonds holmolecules of DNA in their
Q35: Thbonin tablsalt (NaCl) is
A)polar.
B)ionic.
C)covalent.
D)double.
E)nonpolar.
Q36: Which of thfollowing statements is TRUE?
A)Chemical bonds
Q38: A(n) _ is a typof chemical bonin
Q39: Instability of radioisotopes is causeby
A)sudden temperature variations.
B)environmental
Q40: In _ bonds, atoms sharelectrons equally.
A)double covalent
B)unstable
Q41: A _ is a compounthat releases ions
Q63: A pH of 10 is how many
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