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Monica [59]
3 years ago
15

The wave mechanical model of the atom is required to explain the

Chemistry
1 answer:
dlinn [17]3 years ago
7 0

The wave-mechanical model of the atom is required to explain the spectra of elements with multi electron atoms.

<u>Explanation:</u>

Wave mechanical theory say that every electron surrounding a nucleus occupies a certain orbit and moves in a certain direction, but the orbit is like a wave of energy or cloud but not a ring. It was proposed in the 1920s, when scientists Erwin Schrodinger and Louis Victor de Broglie concluded that the Bohr’s model is not suitable for electron location determination.

Based on many assumptions, scientists began to guess as accurately as possible about the behaviour of electrons at different energy levels around the nucleus. Because all electrons are negatively charged, they tend to push their elbows when they are too close together, moving away and changing direction. Each plane has one or more orbits that have more than one electrons that move around the nucleus in a specific patterns or shape.

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Helllpppppppppp plsssssss
Vika [28.1K]

Answer:

Option B  is correct.

Explanation:

An atom consist of electron, protons and neutrons. Protons and neutrons are present with in nucleus while the electrons are present out side the nucleus.

All these three subatomic particles construct an atom. A neutral atom have equal number of proton and electron. In other words we can say that negative and positive charges are equal in magnitude and cancel the each other. The number of protons or neutrons is the atomic number of an atom while sum of proton and neutrons is the mass number.

The beryllium atom have five neutrons, four protons and four electrons.

The option be is correct model of beryllium because it shows that there are four protons and five neutron in nucleus of beryllium atom and four electrons revolving around the nucleus.

Beryllium is alkaline earth metal.

It is present in group two.

Its atomic number is 4.

its atomic mass is 9 amu.

7 0
3 years ago
A chemist weighed out 70.8 g of magnesium. Calculate the number of moles of magnesium she weighed out. Round your answer to sign
solniwko [45]

Answer:

2.91 grams of Magnesium

Explanation:

I put a picture . I used the molar mass of magnesium which can be calculated from the periodic table or simply google it. :) I hope it helps - Enrique

8 0
3 years ago
Read 2 more answers
MnS+HCl H 2 S+MnCl 2 Which set of coefficients would balance the equation?
Gnom [1K]

Answer:

1,2,1,1

Explanation:

5 0
3 years ago
When copper is changed to copper(II) nitrate by the nitric acid, it is an example of a(n) ______-_______ reaction. (two words, i
Nataly_w [17]

Answer:

oxidation- reduction

Explanation:

where gaining electronic reduces one element and losing them oxidize the other nitric acid is not only strong it is also a oxidizing agent

<h2>Oxidize: copper = Cu+2</h2>
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2 years ago
Technetium 99 releases a gamma ray
GenaCL600 [577]

what?? please reword this

6 0
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