What is the general outer electronic configuration of the coinage metals ?
ns2 np6
(n-1)d10 ns1
(n-1)d10 ns2
(n-1)d9 ns2
What is the co-ordination number of Cl- in NaCl crystal ?
8
6
4
3
B.
6
NaCl has octahedral crystal system ,therefore co-ordination number of each Na+ and Cl- ion is 6 .Co-ordination number of atom is determined that the given atom surrounded by how many numbers of atom .In NaCl , each Na+ ion is surrounded by 6 Cl- ions and each Cl- I ions is surrounded by six Na+ ions .So they both show co-ordination number 6 .
IUPAC name of
CH3CH2C(Br)=CH-Cl is :
2 - bromo - l - chloro butene - 1
1 - chloro - 2 - bromo - butene
3 - chloro - 2 - bromo butene - 2
none of these
When acetamide reacts with Br2 and caustic soda , then we get :
acetic acid
bromoacetic acid
methyl amine
ethyl amine