Proton, neutrons, & electrons in a uranium-240 atom?
92,148,92
How many protons, neutron and electrons? (p+,n,e-)
4,5,2
Which group is the least electronegative (name)?
noble gases
Is an anion smaller or larger than a neutral atom?
Larger
Which element in period 3 has 6 valence electrons?
sulfur
What element has 0 neutrons in its most common isotope?
Hydrogen
How many neutrons are in the most common isotope of gold?
118
How many protons, neutron and electrons? (p+,n,e-)
5,6,2
How many electron energy levels does a magnesium cation atom have?
2
How many neutrons does Astatine-211 have?
126
If one proton was fused into a beryllium-10 nucleus... What would be the product?
boron-10
How many protons, neutron and electrons? (p+,n,e-)
9,10,10
Element that is a diatomic gas that typically forms 3 bonds and has a lone pair of electrons
nitrogen
Identify the # of each subatomic particle of Boron-11 with an +3 ion. (p,n,e)
5,6,2
How many valence electrons do the transition metals usually have?
2 valence electrons
Which element in period 5 is a noble gas?
Xenon
Which group (name) is the most stable?
the noble gases
How many electron energy levels does a neutral magnesium atom have?
3
Which is the most electronegative element?
fluorine
Write the nuclide symbol of an atomic that has 17 protons, 18 neutrons, 18 electrons
35 Cl 1-
How many protons, neutrons, & electrons are there in an atom of potassium-40 with a 1+ charge?
19,21,18
How many neutrons are in silver-107 & silver-109?
60,62
How many liquid elements are in the periodic table?
2
Which halogen is a solid at room temperature?
iodine
Which property is described by an element's atom's ability to attract electrons?
electronegativity
Name the element in the second period that is a halogen
fluorine
protium, deuterium, & tritium are al isotopes of which element?
Hydrogen
Which Element is the most electronegative,
tungsten, strontium, antimony, or tin?
antimony
Which element has the smallest atomic radius?
Helium
name of this atom?
lithium-7 with a 1+ charge
Of the three types of elements, which will most like form cations?
metals
How many neutrons are in neon-21?
11
Name the halogen in period 6
astatine
Which of the noble gases is slightly electronegative and will form compounds?
Xenon
name a transition metal in period 6 that in the same group as vanadium
tantalum
What is wrong with this diagram?
Helium will never have an octet. Stable 1st energy level
How many neutrons are in iron-57?
31