Multiple Choice
If an element has 10 protons and 11 neutrons and 10 electrons,which expression correctly identifies the element?
A) neon-21
B) neon-11
C) neon-31
D) sodium-11
E) sodium-20
Correct Answer:
Verified
Correct Answer:
Verified
Q45: A beam of protons and a beam
Q46: A cat strolls across your backyard.An hour
Q47: According to the shell model,how many shells
Q48: The oldest known elements in the periodic
Q49: When we breathe we inhale oxygen, O<sub>2</sub>
Q51: Oxygen,O,(number 8),sulfur,S,(number 16),and selenium,Se,(number 34)have such similar
Q52: What does the following element description
Q53: Which of the following describes a nonmetal?<br>A)poor
Q54: Which element has the atomic number 12?<br>A)Mg<br>B)C<br>C)B<br>D)Na<br>E)Be
Q55: Which of the following statements about electrons