Question

Exercise 2.3
Tick () mark the correct answer :
1. When 5x 10-3 - 2000 x 106 is expressed in standard form, we will get :
(b) 3x 10-3
(c)3x103
(d) 3x102
30
(a)3x10-2
1GB + 179
1)-timited
COC
整卷曲藝等華華​

Answer 1

Answer:

okkk like this okkkk and listen my new song

Step-by-step explanation:

1. c
2. a

Answer 2

Answer:

good night broo

soo jaao......

Step-by-step explanation:

Atomic number (Z)=15=P→[Ne]3s

2

3p

3

Phosphorus belongs to 15th group

number of valence electrons 3s

2

3p

3

=5

and valency =3 in ground state.

Hence, the correct option is C