There are nine elements to

CHEMISTRY · Single correct · A Level · Chemistry · Period 3 elements and their oxides · Period 3 elements and their oxides

Problem

There are nine elements

A

I

. These are belongs to

p

-block element other than halogen. If atomic number of

B

is average of atomic number of

A

and

C

and atomic number of

E

is average of atomic number of

D

and

F

and atomic number of

H

is average of atomic number of

G

and

I

. Atomic numbers of

B, E

and

H

are 7, 15 and 83 respectively and atomic numbers of

C, I

and

F

are greater than

A, G

and

D

respectively. Which of the following statement is incorrect? (1)

B_2C_5

is acidic in nature (2)

AC_2

is acidic in nature (3)

FC_3

is basic in nature (4)

GC_2

is amphoteric in nature