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fiasKO [112]
3 years ago
10

4th one Mark the brainliest

Chemistry
1 answer:
ale4655 [162]3 years ago
4 0

Answer:

1. The electronic configuration of X is: 1s2 2s2 sp6 3s2

2. The configuration of the anion of Y (i.e Y^2-) is 1s2 2s2 2p6

3. The formula of the compound form by X and Y is given as: XY

Explanation:

For X to loss two electrons, it means X is a group 2 element. X can be any element in group 2. The electronic configuration of X is:

1s2 2s2 sp6 3s2

To get the electronic configuration of the anion of element Y, let us find the configuration of element Y. This is done as follows:

Y receives two electrons from X to complete its octet. Therefore Y is a group 6 element. The electronic configuration of Y is given below

1s2 2s2 2p4

The configuration of the anion of Y (i.e Y^2-) is 1s2 2s2 2p6

The formula of the compound form by X and Y is given below :

X^2+ + Y^2- —> XY

Their valency will cancel out thus forming XY

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A block has a mass of 30g and dimensions of 1.5cm by 4.8cm by 2.3cm. Calculate the density (round to TWO sig figs).
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3 years ago
Calcium carbide can be made by heating calcium oxide with carbon. How many kj of heat are absorbed in the reaction?
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179Kj/mol

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