Question

1. Two elements X and Y are reacted with oxygen to form their respective
oxides. They are then dissolved in water. Element X forms a hydroxide
which is basic in nature. Element Y forms an acid. What can element X and
Y be classified as? *
X - metal; Y - non-metal
X - non-metal; Y – metal
X - metal; Y -metal
X - non-metal; Y – non-metal​

Answer 1

Answer:

x is metal and y is non metal

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Explanation:

Answer 2

The correct option is a.

The elements X and Y can be classified as X-metal ; Y-non metal.

• When a metal is reacted with oxygen it forms a metal oxide and if the metal oxide is dissolved in water then it forms metal hydroxide which is a strong base. So, X is a metal.
• When a non metal is reacted with oxygen it also forms a oxide and if it is dissolved in water the non metal oxide shows acidic character. So, Y is a non metal.