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#1: Arsenic is a metalloid. How many valence electrons does arsenic have? A. 3 B. 4 C. 5 D. 6 **my answer; C. 5 is that right?

Chemistry
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#2: Which of the following elements is a metalloid? A. sodium B. iron C. silicon D. cadmium **ym answer: C. silicon is that right?
#3: Which of the following lists the elements in order of decreasing malleability? A. Sn, Sb, Se B. Sb, Sn, Se C. Se, Sb, Sn D. Se, Sn, Sb **my answer: A is that correct??
#4: Which of the following groups contains mostly radioactive elements? A. inner transition metals B. nonmetals C. metals D. halogens **my answer: A. inner transition metals is that right??

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Other answers:

not sure about 3, but 1 and 2 are correct
4D is correct
okay :) thanks!! :)
3A might be right, but idk
okay :) thanks!!
so #4 is D. halogens??
oh my bad, 4A lol
so 4A?? the correct answer is inner transition metals right??
yeah
kk thnaks!!

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