How many electrons arin thoutermost electron shell of a phosphorus atom?
A) 1
B) 2
C) 3
D) 5
E) 8
Correct Answer:
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Q27: An atothat carries a chargis callea(n)
A)ion.
B)molecule.
C)compound.
D)element.
E)microelement.
Q28: Which of thfollowing statements is NOT true?
A)All
Q29: Which chemical bonds arfounwithin water molecules?
A)hydrogen
B)ionic
C)covalent
D)inert
E)single
Q30: How many electrons arin thseconelectron shell of
Q31: An atom
A)is positively charged.
B)is negatively charged.
C)is electrically
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
Q37: How many electrons arin thinnermost electron shell
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