Multiple Choice
Which of the following elements is in the fourth period?
A) chromium (Cr)
B) hydrogen (H)
C) beryllium(Be)
D) carbon (C)
E) zirconium (Zr)
Correct Answer:
Verified
Correct Answer:
Verified
Related Questions
Q56: If an element has 18 protons and
Q57: Which chemical family is composed almost entirely
Q58: If an atom were the size of
Q59: Which color of light comes from the
Q60: Helium,He,is a nonmetallic gas and the second
Q62: A practical application of the wave nature
Q63: What property of an electron makes it
Q64: Does it make sense to say that
Q65: Which element has the atomic number 9?<br>A)F<br>B)Ne<br>C)B<br>D)Na<br>E)Be
Q66: Does a shell have to contain electrons