atomic structure Flashcards
1
Q
relative atomic mass
A
mean mass of an atom compared with 1/12th mass of carbon-12
2
Q
atomic number
A
no of protons
3
Q
mass number
A
no of protons and neutrons
4
Q
linear
A
two bonded pairs of electrons
180 deg
5
Q
trigonal planar
A
3 bonded pairs of electrons
120
6
Q
tetrahedrl
A
foru bonded pairs
109.5
7
Q
pyramidal
A
three bonded one lone
107
8
Q
non linear
A
two bonded two lone
104.5
9
Q
square planar
A
four bonded two lone
90
10
Q
octahedral
A
6 bonded
90
11
Q
trigonal bipyramidal
A
5 bonded
90 and 120
12
Q
differences between isotopes
A
different number of neutrons
different mass numbers
different PHYSICAL properties
13
Q
why do different isotopes of an element have the same chemical properties
A
same electronic confirguration/ same number of electrons in outer shell
