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Pavlova-9 [17]
3 years ago
12

What is the total number of valence electrons in an atom of germanium in the ground state?

Chemistry
1 answer:
Shalnov [3]3 years ago
3 0
The answer is (4) 4. Germanium is a main group element in group 4A. Therefore, like carbon, it has 4 valence electrons in the ground state.
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There are two stable isotopes of carbon, carbon -
nalin [4]

There is not enough information to determine anything about the relative abundances of the two isotopes.

<h3>What are isotopes?</h3>

Isotopes are atoms that have the same atomic number but different mass numbers. We know that all the isotopes of an element are not available to the same extent in nature.

Hence, from the average atomic mass of carbon, we can see that there is not enough information to determine anything about the relative abundances of the two isotopes.

Learn more about isotopes:brainly.com/question/11680817

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4 0
1 year ago
Meteorologists use weather balloons to carry weather instruments high into the atmosphere. When it is first released at Earth’s
ahrayia [7]

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7 0
3 years ago
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In the early twentieth century, what was Alexander Fleming’s hypothesis concerning the relationship between a yellow-green mold
SpyIntel [72]

Answer:

The correct answer is the option c)He thought the mold had released a chemical that prevented the bacteria’s growth.

Explanation:

In the 1920s, Alexander Fleming was working in his laboratory at St. Mary's Hospital in London when, almost by accident, he discovered a naturally growing substance that could attack certain bacteria. In one of his experiments, Fleming observed that colonies of a bacterium had been depleted or removed by a mold that grew on the same Petri dish. He observed that the bacteria furthest from the fungus had grown to produce large-sized colonies, while the colonies closest to the fungus were tiny. He determined that mold made a substance that could dissolve bacteria. The fungus was penicilium chrysogenum and thus Fleming called this substance penicillin, by the name of the mold that produces it. Thus, after several years of experiments in 1930, Howard Florey and Ernest Chain developed at Oxford University the procedures to produce pure penicillin from the fungus that Fleming isolated. Thus penicillin could be concentrated by Florey and Chain, and in 1945 they shared with Fleming the Nobel Prize in Medicine.

Then, <u><em>the correct answer is the option c)He thought the mold had released a chemical that prevented the bacteria’s growth.</em></u>

4 0
3 years ago
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alekssr [168]

Answer:

1-Find the molar mass of the substance.

2-H3PO4

3-New atoms are created.

4-The ratios of the number of moles of each substance that react and that are produced.

5-conservation of mass

6-The number of atoms for every element is equal on both sides of the equation.

7-1:1

8-1:03

9-5.50%

8 0
3 years ago
What are some of the unique properties of water?
Zepler [3.9K]

Answer:

Water molecules are polar, so they form hydrogen bonds. This gives water unique properties, such as a relatively high boiling point, high specific heat, cohesion, adhesion and density

Explanation:

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