Coordination number of Ni in [Ni(C2O4)3]^4- is (a) 3 (b) 6 (c) 4 (d) 2
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About the poet: Frediric Ogden Nash was born in Rye, New York, on 19th August 1902. He came from a distinguished family, and in fact, the city of Nashville in Tennessee was named in honour of one of his forbearers. He worked for a short time on Wall Street, and then as a schoolteacher, before becoming a copywriter. Nash’s first poems began to be published in the New Yorker around 1930. His first collection of poems entitled Hard Lines was published in 1931. Nash also worked briefly for the New Yorker in 1932, before deciding to devote himself full time to his verse. In the 1950s, Nash focused on writing poems for children. His poetry collections from that time include The Boy Who Laughed at Santa Claus (1957) and Girls are Silly (1962). He is perhaps best remembered for these and for his non-sense poetry. Nash died on 19th May 1971.
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ans (d) 2
oxidation number of cr2o4 = -2
-2 * 3 = -6
therefore, x - 6 = -4
x = 2
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