What is valency of iron in F e 2 O 3 -A- 1B- 2C- 3D- 4

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Variable Valency

What is valen...

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What is valency of iron in $F e_{2} O_{3}$ ?

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The atomic number of an element X is 8 and that of element Y is 4. Both these elements can exhibit a valency of :

(a) 1

(b) 2

(d) 4

^{'} A^{'}

2 x + 3 = 5

1176 = 2^{a} \times 3^{b} \times 7^{c}

What is the coefficient of $x^{5}$ in the polynomial p(x)= $x^{5} + 3 x^{4} + 2 x^{2} + 1$ ?

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