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sukhopar [10]
3 years ago
15

Water

Chemistry
1 answer:
Anon25 [30]3 years ago
6 0

Answer:

Water boils at 100°C

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What are the three elements found in a molecule of calcium carbonate? Give their atomic numbers and chemical symbols. How many a
Thepotemich [5.8K]
Calcium carbonate is CaCO3.
So there is calcium, symbol is Ca and an atomic number of 20.
Carbon: symbol is C and an atomic number of 6.
Oxygen: symbol is O and an atomic number of 8.
In one molecule of CaCO3, there is one atom of Ca, one atom of C, and three atoms of O as shown by the subscript next to O in the formula. There are no other subscripts to indicate more than one atom of the other elements, so there is only one atom of the other two elements
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Which of the following is a physical of a substance
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A quality I would say of a physical substance is hardness

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How many unpaired electrons are in the ground state electron configuration 4s23d9?
N76 [4]

ANSWER

The number of the unpaired electrons is 1

STEP-BY-STEP EXPLANATION:

The electronic configuration of a particular element is given below as

4s^23d^9

From the electronic configuration above, you will see that the 4s-orbital has two electrons and the 3d-orbital has 9 electrons

According to Hund's Rule, it "states that electron goes into orbital singly before pairing commences."

To determine the number of unpaired electrons, we need to study the total number of electrons in the d-orbital as given by the question.

Note that, the <em>maximum number of electrons</em> that can enter into the d-orbital is 10

The next step is to fill in the electrons into the orbital

From the above structure, you will see that the number of paired electrons is 4 and the number of unpaired electrons is 1

Therefore, the number of the unpaired electrons is 1

5 0
1 year ago
Which of the following elements is not diatomic?
KATRIN_1 [288]

Answer:

Neon

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Elements from group 8A stay alone

8 0
4 years ago
Water (dihydrogen monoxide) will have which molecular configuration?
aleksandrvk [35]

Answer:

A) bent

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The water molecule has a bent molecular configuration because the lone electron pairs, although still exerting influence on the shape, are invisible when looking at molecular geometry.

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