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Anastaziya [24]
3 years ago
9

The elements in period 3 all have what characteric

Chemistry
1 answer:
Anastasy [175]3 years ago
7 0
The answer is that they all have metallic structures
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Which of the following is the correctly balanced chemical equation for the reaction of Ca(OH)2 and HNO3?
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Explanation:

The reaction between calcium hydroxide and nitric acid is as follows.

  Ca(OH)_{2} + HNO_{3} \rightarrow Ca(NO_{3})_{2} + H_{2}O

Number of reactant atoms are as follows.

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Number of product atoms are as follows.

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To balance the given chemical equation, multiply HNO_{3} by 2 on reactant side and multiply H_{2}O by 2 on the product side.

Therefore, the balanced chemical equation will be as follows.

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3 years ago
The answer to this question
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Hey there!

Oxygen needs two bonds to have a valence orbital of s²p⁶.

In a hexanal molecule, oxygen has a double bond with one carbon atom.

A double bond is when two pairs of electrons are being shared.

So your answer is b. 2.

Hope this helps!  

7 0
3 years ago
Adding a neutron to an atom changes what property of the atom?
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Answer: <span>C. the atomic mass </span>
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I am 14 and i am in 8th grade, and i really like this boy in my science class, and i really wanna ask him out but i don't know i
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