How many valence electrons do the transition metals usually have?
2 valence electrons
Of the three types of elements, which will most like form cations?
metals
Proton, neutrons, & electrons in a uranium-240 atom?
92,148,92
Which of the noble gases is slightly electronegative and will form compounds?
Xenon
How many electron energy levels does a neutral magnesium atom have?
3
Name the element in the second period that is a halogen
fluorine
Which group is the least electronegative (name)?
noble gases
Which element in period 5 is a noble gas?
Xenon
name a transition metal in period 6 that in the same group as vanadium
tantalum
name of this atom?
lithium-7 with a 1+ charge
How many electron energy levels does a magnesium cation atom have?
2
Is an anion smaller or larger than a neutral atom?
Larger
How many neutrons are in the most common isotope of gold?
118
How many neutrons are in silver-107 & silver-109?
60,62
Which Element is the most electronegative,
tungsten, strontium, antimony, or tin?
antimony
Which element in period 3 has 6 valence electrons?
sulfur
How many protons, neutrons, & electrons are there in an atom of potassium-40 with a 1+ charge?
19,21,18
How many neutrons does Astatine-211 have?
126
Element that is a diatomic gas that typically forms 3 bonds and has a lone pair of electrons
nitrogen
Which property is described by an element's atom's ability to attract electrons?
electronegativity
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
protium, deuterium, & tritium are al isotopes of which element?
Hydrogen
What is wrong with this diagram?
Helium will never have an octet. Stable 1st energy level
Name the halogen in period 6
astatine
How many protons, neutron and electrons? (p+,n,e-)
5,6,2
How many protons, neutron and electrons? (p+,n,e-)
4,5,2