Which of the following lists gives the atomic symbols for potassium,magnesium,beryllium,and sodium?
A) Po,Mn,Br,Na
B) P,Mn,Be,Se
C) K,Mg,Be,Na
D) Pt,Mg,Be,Sc
E) K,Mn,Br,Na
Correct Answer:
Verified
Q5: Which one of the following lists gives
Q6: Cathode rays are
A)anions.
B)protons.
C)cations.
D)positrons.
E)electrons.
Q7: A series of silicon-hydrogen compounds with the
Q8: The names of the elements whose symbols
Q9: If the Thomson model of the atom
Q11: A subatomic particle is
A)a piece of an
Q12: Who discovered the nucleus of an atom?
A)Thomson
B)de
Q13: Which of the following is the atomic
Q14: What is the symbol for the element
Q15: Experiments were carried out in which a
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