Which scientist is responsible for the theory which explains why properties of elements recur in a periodic fashion?
A) Bohr
B) Galileo
C) Dalton
D) Avogadro
E) Mendeleev
Correct Answer:
Verified
Q41: Which of these elements is a metalloid?
A)
Q43: Which element is not a nonmetal?
A)P
B)I
C)N
D)K
E)Cl
Q44: Which of these elements has seven valence
Q44: The elements of group 7A will all
Q46: What is the maximum number of electrons
Q49: Which of these elements has three valence
Q50: Which of the following elements is generally
Q51: Which of the following is true?
A)Argon and
Q52: The elements of group IA will all
Q60: Which of these elements has two valence
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