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Writing Chemical Formulae

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

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Solution

a) Incorrect, the correct symbol of cobalt is Co
[0.5 Marks]
(b) Incorrect, the correct symbol of carbon is C
[0.5 Marks]
(c) Incorrect, the correct symbol of Aluminium is Al
[0.5 Marks]
(d) Correct (He)
[0.5 Marks]

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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

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

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

Give the symbols for the following elements.
(a) iron (f) silicon
(b) sodium (g) boron
(c) carbon (h) chlorine
(d) sulphur (j) zinc
(e) helium (k) gold

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