Which among the following atoms have a stable octet valence electronic configuration
Na
O
C
Ar
Atomic no.of P is 15. What is its electronic configuration?
2,6,6,1
2,8,2,3
2,8,5
8,7
MgO is slightly soluble in
Chloroform
Water
Benzene
Toluene
Which one is more electronegative?
Ca
N
F
Which one of the following can easily become a cation?
CI
How many C-H covalent bonds are present in methane molecule?
3
4
2
6
How many lone pairs are present in oxygen in the H2O molecule
1
0
How covalent bond is formed
Donation of electrons from one atom to another
Transfer of electrons from one atom to another
Sharing of electrons between the atoms
None of these
How many electrons are present in Mg2+ ion?
10
11
12
8
How many electrons are needed for oxygen atoms to attain octet electronic configuration in its valence shell?
5
