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