Which group will have an electron configuration that ends in s2?

a
Alkali metals (Group 1)
b
Halogens (Group 17)
c
Alkaline earth metals (Group 2)
d
Noble gases (Group 18)

Answer:

41.9866

Explanation:

18.02x2.33

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(please make me brainleist I need to level up)

Answer:

0

Explanation:

Answer:

i think people who take vitamins

Answer:

its d;grocery stores sell legumes

Explanation:

I just took the test

Answer: It will give up electrons, forming a positive ion.

During bonding, strontium atom will give up electrons, forming a positive ion.

STRONTIUM:

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Answer:

by principal quantum number (n) and azimuthal quantum number (l)

Explanation:

I used the web to answer so I'm not sure if this is right

Answer:

I think it's true

Answer:

when the sun's light hits a living thing

Answer:

Next time you're just recently out of a serious relationship, and you're craving some sort of intimacy and comfort, feel confident that a rebound might actually be a good thing as long as it's an upgrade, either physically, emotionally, a fun date, or even just finding a way to shift your mentality toward viewing. so what im saying is if your happy in that relationship stay in it and if he or she becomes a meany leave it its not goo for your health

Answer:

about 5 years i think

Explanation:

I've tried all the methods i know

it's about 5 years

hope it helps

The age of the artifact is equal to 2.5 × 10³ years when the half-life of carbon- 14 is 5.73 × 10³ years.

The half-life of a radioactive element is defined as the time that is required to decrease the original quantity of a radioactive isotope to half after decay.

The half-life of a radioactive isotope is the feature of the element and does not depend upon the actual amount of the radioactive isotope.

Given, the ratio of the initial and left amount of  ¹⁴C is :

N = 0.745 N₀

The half-life period of the ¹⁴C isotope = 5.73 × 10³ years

The rate constant of the decay of radioisotope can be calculated from the below-mentioned formula:

[tex]\displaystyle k=\frac{0.693}{t_{1/2}}[/tex]

[tex]\displaystyle k=\frac{0.693}{5.73 \times 10^3}[/tex]

k = 0.123 × 10⁻³ yr⁻¹

The age of the artifact can be calculated as:
[tex]\displaystyle t =\frac{2.303}{k} log\frac{N_0}{N}[/tex]

[tex]\displaystyle t =\frac{2.303}{0.123\times 10^{-3}} log\frac{N_0}{0.735 N_0}[/tex]

t = 2.5 × 10³ years

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The transition between n=1 and n=2 corresponds to the longest wavelength with the lowest frequency.

An electron is said to be "excited" when it is promoted to a higher energy level inside its bound state.

Either the electron absorbs a photon and obtains all of its energy, or it receives energy via a collision with another, energetic electron.

Understanding energy levels :

Therefore the transition between n=1 and n=2 corresponds to the longest wavelength at the lowest frequency.

The higher the frequency of a photon, the higher its energy.

The longer the wavelength of a photon, the lower its energy.

                                  E ∝ 1/λ      [ FOR PHOTON ]

The lowest energy is 1 eV, which corresponds to the transition between the n=1 and n=2 levels.

The longest wavelengths are associated with the lowest energies, so transitions between n=1 correspond to the longest wavelengths.

The term "thermal excitation" refers to the process by which electrons within a semiconductor crystal lattice are elevated to a higher energy band via lattice vibrations. This process, known as electron relaxation, occurs when an excited electron returns to a less energetic state.

As a result, a photon is released into the environment, or energy is transferred to another particle. The amount of energy released is proportional to the gap in potential energy between the electron's lowest and highest states.

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Actual answer: 6

Well I also need help with this, this should help the both of us:

A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding.

Explanation:

The first two period elements can form maximum 4 covalent bonds. However, third or higher period elements can make higher number of bonds for example; SF6.

Answer:

A - X Only

Explanation:

Answer:

Explanation:Compounds between Nonmetals and Nonmetals

Compounds that consist of a nonmetal bonded to a nonmetal are commonly known as Molecular Compounds, where the element with the positive oxidation state is written first. In many cases, nonmetals form more than one binary compound, so prefixes are used to distinguish them.

# of Atoms 1 2 3 4 5 6 7 8 9 10

Prefixes Mono- Di- Tri- Tetra- Penta- Hexa- Hepta- Octa- Nona- Deca-

the compounds are covalent, not ionic

Answer:

c. The heat from the hot cup warms my hands

Answer:

AlAsO4

Explanation:

Aluminium arsenate is an inorganic compound with the formula AlAsO4. It is most commonly found as an octahydrate. It is a colourless solid that is produced by the reaction between sodium arsenate and a soluble aluminium salt.

Answer:

It has a high electrical conductivity, caused by dissociation through protonating itself, a process known as autoprotolysis. The comparable equilibrium constant for water, Kw is 10−14, a factor of 1010 (10 billion) smaller.

Answer:

Electrons

Explanation:

Cathode rays carry electronic currents through the tube. Electrons were first discovered as the constituents of cathode rays. J.J. Thomson used the cathode ray tube to determine that atoms had small negatively charged particles inside of them, which he called “electrons.”

The rays produced in a cathode tube are electrons which are present in the shells surrounding the nucleus of an atom.

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

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Answer:

Fertilization

Explanation:

Fertilization occurs when the nucleus of both a sperm and an egg fuse to form a diploid cell, known as zygote. The successful fusion of gametes forms a new organism.

Answer:

true

Explanation:

Answer:

1. mercury.

2. suspensions.

3.iodine is the solute and alcohol is the solvent.

4. A element.

Answer:

2 and 3 is the answer because Methane is emitted from a variety of anthropogenic (human-influenced) and natural sources. Anthropogenic emission sources include landfills, oil and natural gas systems, agricultural activities, coal mining, stationary and mobile combustion, wastewater treatment, and certain industrial processes

Answer:

The substance (or substances) initially involved in a chemical reaction are called reactants or reagents.

Explanation:

Answer:

The chemical or substances used to start a reaction are called reactants.

Answer: Porous rock has gaps between rock particles that can fill with water. but i’m not 100% sure

Explanation:

Answer:

porous rock has gap between rock particles that can fill with water

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Air pressure is greatest near the surface of the Earth in the Troposphere .