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Which of the ...

Question

Which of the following symbols of elements are incorrect? Give their correct symbols

(a) Cobalt CO

(b) Carbon c

(c) Aluminium AL

(d) Helium He

(e) Sodium So

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Solution

a) Incorrect, the correct symbol of cobalt is Co

(b) Incorrect, the correct symbol of carbon is C

(c) Incorrect, the correct symbol of Aluminium is Al

(d) Correct (He)

(e) Incorrect, the correct symbol of sodium is Na

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Question 16
Which of the following symbols of elements are incorrect? Give their correct symbols

(a) Cobalt CO

(b) Carbon c

(c) Aluminium AL

(d) Helium He

(e) Sodium So

Question 16
Which of the following symbols of elements are incorrect? Give their correct symbols

(a) Cobalt CO

(b) Carbon c

(c) Aluminium AL

(d) Helium He

(e) Sodium So

Q. The symbols of the elements cobalt, aluminium, helium and sodium respectively written by a student are as follows. Which symbol is the correct one ?
(a) CO
(b) AL
(c) He
(d) So

Q. Does a symbol represent an atom or a molecule? What are the symbols for each of the following?

(a) cobalt
(b) copper
(c) chlorine
(d) carbon

Q. What do you understand by symbols of chemical elements? Give the symbols of carbon, calcium, copper, chlorine and cobalt.

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