How many electron/s is/are present in Oxygen atom?
a) 8
b) 9
c) 16
d) 0
How many neutron/s is/are present in Oxygen atom?
a) 9
b) 8
c) 16
d) 7
How
many proton/s is/are present in Chlorine atom?
a) 17
b) 7
c)
18
d) 35
How many electron/s is/are present in Chlorine atom?
a) 17
b) 7
c) 18
d) 35
How many neutron/s is/are present in Chlorine atom?
a) 17
b) 7
c) 18
d) 35
Why noble gases
are less reactive and stable?
a) they have 7 electrons in their valence shells
b) they have complete valence shell
c) their nuclei are stable and complete
d) they have 2 electrons in their shells
