UNIT 2 -atomic structure Flashcards
1
Q
In nucleus= proton+neutron what is the mass and charge?
A
p=+
n=0
mass for both = 1
2
Q
what is the atomic number?
A
no of protons
3
Q
what is the mass number?
A
no of neutrons + protons
4
Q
1s2 2s2 2p6 3s2 3p(6) d10 f14 what is the name of this diagram?
A
moeller diagram
5
Q
what are the 5 most common valence electrons?
A
C(4)H(1)O(2)P(5)S(2)N(3)
6
Q
what are isotopes?
A
diff no of neutrons= diff mass no
7
Q
when is an isotope radioactive?
A
too many neutrons (uranium)
8
Q
what is electronegativity?
A
atom attracts e towards itself, EN increases across periodic table due to no of valence electrons
9
Q
what does the lewis structure show?
A
covalent bonding of sharing electrons
10
Q
most electronegative elements in order?
A
F,O,CL,N,Br (focln br) ‘fokin brill’
