How many neutrons are in neon-21?
11
Which is the most electronegative element?
fluorine
Which element in period 3 has 6 valence electrons?
sulfur
How many neutrons are in iron-57?
31
How many liquid elements are in the periodic table?
2
What element has 0 neutrons in its most common isotope?
Hydrogen
Which element has the smallest atomic radius?
Helium
Write the nuclide symbol of an atomic that has 17 protons, 18 neutrons, 18 electrons
35 Cl 1-
Which group (name) is the most stable?
the noble gases
Identify the # of each subatomic particle of Boron-11 with an +3 ion. (p,n,e)
5,6,2
Which halogen is a solid at room temperature?
iodine
Which group is the least electronegative (name)?
noble gases
How many neutrons does Astatine-211 have?
126
Which element in period 5 is a noble gas?
Xenon
Is an anion smaller or larger than a neutral atom?
Larger
How many neutrons are in the most common isotope of gold?
118
