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katrin [286]
3 years ago
11

Which is the only element in group 1 on the periodic table that forms covalent bonds?

Biology
2 answers:
guajiro [1.7K]3 years ago
8 0

Answer:

Hydrogen

Explanation:

Hydrogen is the only nonmetal in group 1, therefore it is the only element in group 1 that forms a covalent bond.

Natali [406]3 years ago
7 0

Answer:

<h2>hydrogen is the answer</h2>

Explanation:

<h2>Hope it helps uu........</h2>

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<h2>Thank you</h2>
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Both coal and diamonds are forms of elemental carbon. Coal is brittle while diamonds are considered to be the hardest Of all sub
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arbon, as with many elements, can arrange its atoms into several different geometries, or "allotropes." In pure diamond, every carbon atom is covalently bonded to exactly 4 other carbon atoms in a very specific and energetically favorable geometry. The diamond cannot be broken or scratched unless many covalent bonds are broken, which is difficult to do. In another common allotrope, graphite, every carbon atom is covalently bonded to only 3 other carbon atoms, and the atoms are arranged in sheets that are not covalently bonded to each other. The sheets can be broken apart easily, ultimately meaning that graphite can be easily scratched. Coal is composed of particles of different allotropes of carbon, and some "amorphous carbon," which has no defined geometry in its atomic structure. Without a continuous network of covalent bonds, coal is easily scratched (i.e. it is not hard).



8 0
3 years ago
The overall population of a species decreased. What could have occurred to make this happen?
andriy [413]
Starvation.
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4 0
3 years ago
Why the walls of the ventricles are much thicker than the walls of the atria.
Mkey [24]

Answer:

The ventricles of the heart have thicker muscular walls than the atria. This is because blood is pumped out of the heart at greater pressure from these chambers compared to the atria.

Explanation:

hope this helps

8 0
2 years ago
Which statement is best supported by the data in the graph? A graph entitled Number of people living with H I V, number of peopl
galben [10]

The graph is not given in the question and options are also not clear, so the required graph is attached below and the clear options are also given below:

Which statement is best supported by the data in the graph?  A graph entitled Number of people living with H I V, number of people newly infected with H I V and number of AIDS deaths worldwide from 1990 to 2008 in millions is shown. Year is on the horizontal axis and number of people is on the vertical axis. The number of people living with H I V steadily increases over the years. The number of people newly infected increased from 1990 to 1996 and then began to decrease. The number of deaths due to AIDS increased from 1990 to 2002, and then began to level off and decrease.

A. Since 2000, there has been an increase in the number of people living with HIV, but a decrease in the number of people newly infected with HIV.

B. Since 1990, both the number of new HIV infections and the number of deaths due to AIDS has consistently increased

C. The life span of a person living with HIV has become shorter.

D. Twice as many people were living with HIV in 2008 than in 2000.

 Answer:

A. Since 2000, there has been an increase in the number of people living with HIV, but a decrease in the number of people newly infected with HIV.

Explanation:

According to the data shown in the graph, since 2000, the people living with HIV has been increased, but a decrease in the number of people newly infected with HIV.

The reason behind this can be early screening of the infection since 2000 and awareness among people decreasing the infection rate as well.

Hence, the correct option is A.

8 0
3 years ago
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dna is made of two chains of nucleotides. which type of bonds hold the chains together? hydrogen bonds covalent bonds ionic bond
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<span>The appropriate response is hydrogen bonds. It is a feeble bond between two particles coming about because of an electrostatic fascination between a proton in one atom and an electronegative iota in the other. Intermolecular hydrogen holding is in charge of the high breaking point of water (100 °C) contrasted with the other gathering 16 hydrides that have significantly weaker hydrogen bonds.</span>
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