Question

An element 'E' is present in 5th group and third period of the Mendeleev's periodic table. The chemical formula of its oxide and hydride respectively are

Answer 1

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Answer 2

Given that An element 'E' is present in 5th group and third period of the Mendeleev's periodic table.

5th group and 3 rd period element is Phosphorous

Chemical Formula of its oxide :

P₂O₅- Phosphorous pent oxide

Chemical Formula of its Hydride  :

PH₃--- Phosphine

Extra Information :

Mendeleev's periodic classification of elements is based on two factors :

1. Increasing atomic mass

2. Grouping together of elements having similar properties.