Write the formula equations and then balance each of the following reactions a. sodium arsenate plus stannic chloride gives stannic arsenate plus sodium chloride b. Lead (II) sulfide plus oxygen gas gives lead (I) oxide plus sulfur dioxide

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d-Block Elements

According to the modern form of periodic table, 118 elements are present which are subdivided as four blocks, namely, s, p, d and f-block elements based on the entry of the valence electron or last electron into which orbital.