In which Group do most of the elements have 8 valence electrons?
A. Transition metals
B. Alkaline earth metals
C. Halogens
D. Noble gases

Answers

Answer 1
The answer would be D. Nobel Gases

Related Questions

Which of the following is one way creativity can help scientists?

Answers

Answer:

One way creativity is helpful to scientists is when they need to come up with a experiment or cure for something their imaginastion is very helpful. The reason for that is with creativity they could get answers much quicker!

Explanation:

Answer:

I agree with that answer


8. In
studies, scientists do not interfere with what is going on.

Answers

Answer:

Observational

Explanation:

This is the answer because researchers or scientist observe the effect of a  diagnostic test, treatment or other intervention without trying to change anything.

how to calculate molecular mass?

Answers

Please refer to the attachment!

Hope it will help u,

Thankyou

======#Itz_Ravi❤️=======

This element has nine more electrons than Technetium

Answers

Answer:

Tellurium

Explanation:

Technetium's position on the periodic table is 43 and Tellurium's is 52

How did Edward Teller died?

Answers

Answer:

septembar 9 2003

Explanation:

he died in september 9 2003

Answer:

Your answer:

His cause of death was a stroke ( heart attack)

hope this helped you

please mark as the brainliest (ㆁωㆁ)

why are group viia elements very active nonmetals

Answers

I’m not sure what you’re asking but- halogens are among the most active nonmetals due to their electron configuration and number of valence electrons.

23°C = ______ K

-250
296
123
23

Answers

Answer:

296

Explanation:

Tk = ºC + 273

Tk = 23 + 273

T = 296 K

1.54x10-1 L / 2.36x 10-45 solve this in scientific notation

Answers

Answer:

Fish is the best time to go

Explanation:

Chicken nuggets and a salad and some onion rings and a new charger

what does it mean to say that a hypothesis is falsifiable

Answers

Answer: This means that the answer can be proven wrong.

Explanation:

Hope this helps!!

Answer:

is means it can be proven false

SHOW YOUR WORK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
An experiment was conducted to find the mass of one mole of carbon atoms. The results of the experiment showed that a mole of carbon atoms had a mass of 15.78 g. The accepted value of a mole of carbon atoms is 16.00 grams. What is the percent error in this experiment?

Answers

Answer:

1.375%

Explanation:

Percent Error = measured value - accepted value/ accepted value x 100

Measured Value: 15.78

Accepted Value: 16.00

Work:

[tex]\frac{15.78-16.00}{16.00}[/tex] * 100

[tex]\frac{-.22}{16}[/tex] * 100 = -1.375

You cannot have a negative percentage. Therefore the answer is 1.375%


A given volume of methane diffuses in 20 seconds How long will it take the
same volume of sulphur (IV) oxide to
diffuse under the same condition
(Methane = 16, Sulphur (IV) oxide=64)​

Answers

Explanation:

Relative molecular mass of CH4 = 12 * 1 + 4 = 16

Relative molecular mass of SO2 = 32 + 10 *2 = 64

tSO2/tCH4 = √MSO2/MCH4

t/20 = √64/16 = √4

t/20 = 2

∴ t = 20 * 2 = 40sec

Which of the following is a noncontact force?

Answers

Answer:

gravity

Explanation: its a force that pulls you down but you are never making contact with it

Answer: Gravity

Explanation:

It pushes you down but you never actually touch it

POSSIBLE POINTS: 33.33
What is the name of the binary molecule H202? This compound is also known as hydrogen peroxide and is a popular disinfectant for cuts or
scrapes
Dihydrogen monoxide
O Hydrogen dioxide
Dihydrogen Dioxide
None of this makes any sense

Answers

Answer:

Dihydrogen Dioxide

The name of binary molecule H₂O₂ is also known as hydrogen peroxide and is a popular disinfectant for cuts or scrapes is dihydrogen dioxide. The correct option is A.

What is dihydrogen dioxide?

Dihydrogen dioxide is the substance of water with extra oxygen molecules. In the dihydrogen monoxide parody, water is referred to by a strange scientific term, most frequently "dihydrogen monoxide,". It is a poisonous gas, and it is leading to the death of many people in America. It is known as DHMO.

Some of its characteristics are listed in an especially ominous manner, such as speeding up corrosion and inducing asphyxia. This substance, commonly referred to as hydrogen peroxide, is used frequently as a disinfectant for cuts and scrapes.

Thus, the correct option is A. Dihydrogen dioxide.

To learn more about dihydrogen dioxide, refer to the below link:

https://brainly.com/question/14537002

#SPJ6

What does weight measure?

A: Quantity of matter in an object
B: How much space an object takes up
C: Force of gravity acting on an object
D: How long it takes for an event to occur

Answers

C because I’m space there’s no gravity meaning things are weightless
C. Force of gravity acting on an object

PLEASE HELP ME QUICK
When an iron nail is ground into powder, its mass ____.
a. stays the same
b. decreases
c. increases
d. cannot be determined

When paper turns yellow-brown upon exposure to sunlight, what type of change is likely taking place?

a. a physical change
b. a chemical change
c. neither a physical change nor a chemical change
d. both a physical change and a chemical change

Answers

Answer:

1.It stays the same

Explanation:

because its only the natural stature of it has changed

find the odd one out and explain the reason why ? sand , sugar , salt , baking soda​

Answers

Answer: Sand

Explanation: Out of all the choices, sand is the only one that cannot react with other substances.

Answer:

sand

Explanation:

all are used mostly in cookin and preparing things and are in the kitchen

What is Polymerase Chain Reaction?

Answers

Answer:

Polymerase Chain reaction is a method used by scientists to making A LOT (millions to billions) of copies of a DNA sample which then allows scientists to take a small of that DNA and increase the amount to a very large amount to study the DNA into further detail.

Polymerase Chain Reaction (PCR)

   Polymerase chain reaction (PCR) is a technique for replicating or copying a specific portion of a DNA strand; leads to millions of copies of the DNA segment technique for replicating or copying a specific portion of a DNA strand; leads to millions of copies of the DNA segment.

i really need help I WILL GIVE BRAINLIEST

Based on the synthesis reaction, what would the product of the reaction be? NaPO3 + CuO → ? NaO + CuPO3 Na + P + Cu + O4 NaCuPO4 NaCu + PO4?
THE ANSWERS C YALL I GOT IT RIGHT I THOUGHT I NEEDED HELP THX THOO

Answers

Answer:

The answer is c

Explanation:

Answer:

C

Explanation:

What is the formula for potassium nitrate?

Answers

It depends on which manner the formulae is being asked but the answer is: KNO3

How do you do a one pager online!?!?!
I couldn’t find science so I just chose chemistry

Answers

You can use pic collage or google docs.

Need help with this

Answers

Answer:

environmentalism I think

Explanation:

...................

Answer:

2nd choice answer

Explanation:

thats ez tbh

How many significant figures are in the following number?
5.67 x 106
3
6
4

Answers

The answer would be 3 because every number other than 0 is significant. 0 is significant if it is sandwiched between other numbers like 0.50078 (5 sig figs) or if it’s at the end of a decimal 0.450 (3 sig figs)
another practice example would be 0.00456 (3 sigfigs)

Which of the following units is NOT an official Sl unit?

A)meter
B)inches
C)second
D)kilogram

Answers

The answer is B. inches !

Which is the electron configuration for boron? 1s22s3 1s22s23s1 1s12s22p2 1s22s22p1

Answers

Answer:

electron configuration for boron is 1s22s22p1

Answer:

D

(answer is D)

My teacher gave this assignment for homework, and I don’t get it. A little help please?

Answers

County: cell

State: Tissue

Country: Organ

Continent: Organ system

World: organism

(smallest to largest)

what is the CAS of hydrogen peroxide​

Answers

Hydrogen Peroxide - CAS 7722-84-1 - Calbiochem CAS 7722-84-1 | 386790.

What is the mass number of beryllium

Answers

Answer:

9.012182 u

Explanation:

The answer would be 9

What example of scientific thinking does Bohr response best indicate

Answers

Answer:

The Bohr model shows the atom as a central nucleus containing protons and neutrons with the electrons in circular orbitals at specific distances from the nucleus (Figure 1). These orbits form electron shells or energy levels, which are a way of visualizing the number of electrons in the various shells

What does a straight line represent on a distance vs time graph?

Answers

A straight line on a distance va time graph represents constant speed

Answer:

It represents the relationship between the distance travelled and time spent as constant or at a stop.

Explanation:

This is because as the line progresses, the time increases the distance should change as well my moving up or down, in a linear equation this relationship is constand but if the line is horizontal though, the distance is not changing despite time passing which means it has come to a stop.

The results of an investigation are the
(Blank)

Answers

Answer: ending results

Explanation:

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Xavier currently pays $11.50 per movie he downloads with his current movie package. a new movie package charges $10 per movie downloaded with a $15 joining fee. How many movies would he need to download for him to want to switch? ________ super intelligente!Elle estIl estC'estIls sontElles sontO Ce sont I need helpp asap pleasee Given what you know about the experience of the pilgrims on the mayflower and the settlement of Plymouth what topics are themes would you expect to be covered and William Bradford account? Given what you know about the experience of the pilgrims on the Mayflower and the settlement of Plymouth what topics or themes would you expect to be covered in William Bradfords account? Your answer should be at least 150 words why did mongols have a more egalitarian culture What is the result when the number 10 is decreased by 5.1%? Write an integer for: a deposit of $45 * Plz help fast! Perhaps you wanted pizza for dinner, but were out voted by the rest of the family who wanted chili. This is similar to what happens in a community. One person hasto give up a right for the good of the group. Sometimes citizens' duties and rights conflict with each other. A good example is a public protest. People have the rightto meet in groups and share ideas. However, a protest can disrupt traffic or other normal activities. A city must provide extra police protection to keep people safe.Therefore, the city has the right to require permission in advance for a protest. Government must make laws to balance the rights of individuals and different groupsof peopleWhich of the following statements best describes this paragraph?The paragraph contains categories of comparisonThe paragraph containsSimileThe paragraph contains no text connectionsThe paragraph contains an analogy Marco walked 27/100 kilometer to the park. then he walked 3/10 kilometer to the library. What fraction of a kilometer did he walk in all? What is 67840000000 in scientific notation ? BRAINLY I NEED HELP ASAP !! Which pronoun best completes the sentence? Select the word from the drop-down menu. __ love to take piano lessons after school. A.him B.it C.me D.they help on history plz What the answers due in 2 min I need help on 27-30 how do the steps taken by leaders of athens reflect a turn down in democracy Decide whether the sentence is grammatically CORRECT or INCORRECT as written,Juan camina a la escuela rpidamente.O correctO incorrect An open-topped tub is filled completely to the top edge with solid ice. What will happen when the ice melts?A) The tub will overflow.B) In the process of melting, 9 percent of the water will be converted to water vapor.C) The level of the water will be lower than the edge of the tub.D) There will be no change in the level of the tub. 40 fewer than a number t0 40-tOt+40O -400O t-40 if M is the midpoint of AB, find the coordinates of A if B(4,-6) and M(1,-2) A is ___.