Question

Symbol of Sodium, Copper and Magnesium are respectively

(a) Na, Mg and Cu ( )
(b) Na, Cu and Mg ( )
(c) Mg, Na and Cu ( )
(d) Cu, Na and Mg ( )​

Answer 1

(b) Na, Cu and Mg is the correct answer.

• Periodic table is the arrangement of elements as per their atomic number Sodium is present in group I of periodic table. It is represented by symbol Na.
• Magnesium is present in group II of periodic table. It is represented by symbol Mg.
• Both of these are present in Period III.
• Copper is present in Period IV and is a transition element. It is represented by symbol Cu.

Answer 2

HELLO DEAR,

GIVEN:- Symbol of Sodium, Copper and Magnesium are respectively

(a) Na, Mg and Cu ( )

(b) Na, Cu and Mg ( )

(c) Mg, Na and Cu ( )

(d) Cu, Na and Mg ( )

ANSWER:-

The correct option is,

(b) Na, Cu and Mg (✓)

The elements Sodium (Na) , Copper (Cu) and Magnesium (Mg) are belongs to the 3-d series .

The 3-d series Atomic no.

Sc - Scandium(Sc) 21

Ti - Titanium(Ti) 22

Vr - Vanadium(V) 23

Cr - Chromium(Cr) 24

Mg - Manganese(Mn) 25

Fe - Iron(Fe) 26

Co - Cobalt(Co) 27

Ni -Nickel(Ni) 28

Cu - Copper(Cu) 29

Zn -Zinc(Zn) 30

THANKS.