Multiple Choice
In which group do all atoms have two valence electrons in the ground state?
A) alkali metals
B) alkaline earth metals
C) halogens
D) noble gases
Correct Answer:
Verified
Correct Answer:
Verified
Q4: The positive charges in an atom are
Q5: Isotopes are atoms of the same element
Q6: Which contains 7 neutrons?<br>A)<img src="https://d2lvgg3v3hfg70.cloudfront.net/TB4085/.jpg" alt="Which contains
Q7: Alpha particles are heavier than beta particles.
Q8: Which type of radioactivity is an electron?<br>A)alpha,
Q10: Some positively charged alpha particles were deflected
Q11: Give the main shell configuration for chlorine.<br>A)17<br>B)18<br>C)2,
Q12: The charge on the nucleus of a
Q13: Which element is a metal?<br>A)Mg<br>B)S<br>C)P<br>D)Br
Q14: Electrolysis is<br>A)the production of electrical currents from