How do elements form?

2 answers:

6 0

Elements are formed by nuclear fusion. Stars can undergo nuclear fusion and create new elements by squeezing them together.

iren [92.7K]3 years ago

4 0

Our planet is formed of elements and the combinations of elements known as compounds. An element is a pure component formed of atoms, which are all of a similar kind. Till now, 116 elements are identified, and of these only 90 occur naturally.

At the time of universe formation, which is, about 14 billion years ago known as Big Bang, the creation of only the lightest elements took place, that is, hydrogen and helium along with minute concentrations of beryllium and lithium. The rest of the 86 elements found in nature were formed in the nuclear reactions, which took place in the stars and in huge stellar explosions called supernovae.

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Water exists as a simple molecule. Describe the bonding present in water and how the electrons are involved in these bonds.

satela [25.4K]

Answer:

The *intramolecular* bonding between the Hydrogen and Oxygen atoms are called Covalent Bonds.

Covalent bonds are strong electrostatic attractions between 2 positively charged nuclei and a shared pair of electrons.

The *intermolecular bonding* of water molecules is called hydrogen bonding as well as instantaneous - induced dipole interaction.

Instantaneous-induced dipoles is where 2 water molecules interact. The results in negative electron clouds repelling each other resulting in a region of positive charge - the molecules are said to have an induced positive charge.

This water molecule with an induced positive charge then attracts electrons from a neighbouring water molecules - resulting in an instantaneous negative dipole.

These dipoles are fleeting/temporary and are the weakest intermolecular bonds.

Hydrogen bonding is a result of the 2 line pair of electrons in Oxygen atom of the water moelcule. These electrons are attracted to extremely electronegative (electronegativity :ability of an atom to attract a bonding pair of electrons) elements such as Oxygen from a neighbouring water molecule resulting in what is known as hydrogen bonding,

7 0

3 years ago

Which element can bond with titanium (Ti) to form a polar covalent bond?

snow_lady [41]

Answer: Your answer will D

Explanation: <u><em>The element which can bond with titanium to form a polar covalent bond is Nitrogen. Polar covalent bond is formed between two elements whose electronegativity difference is in the range of 0.4-1.7.</em></u>

6 0

4 years ago

Read 2 more answers

Which compound plays an important role in leather processing and electroplating?

Margaret [11]

<u>Answer;</u>

Hydrochloric acid

<u>Explanation;</u>

Hydrochlorc acid plays a vital role in leather processing and electroplating.
Hydrochloric acid has a number of important applications in real life these includes; fertilizers, and dyes, textile, in electroplating, rubber and in the photographic industries.
Electroplating is the process that involves coating a metal using another metal for the purpose of improving their appearance or preventing rusting.
Hydrochloric acids is used in the processing of leather or the tanning of leather process, in which tanneries use the acid to stop the growth of bacteria and also maintain proper pH.

7 0

4 years ago

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To a 0.0001 m solution of mg(no3)2, naoh was added to a final concentration of 0.001m did a precipitate form?

Natalija [7]

I looked on a solubility chart to answer this question, and hydroxides are generally insoluble (with some exceptions of course). However, it says to consider $Mg(OH)_{2}$ as an insoluble substance, though it may be moderately soluble.