What element has 7 valence electrons and 4 electron shells

Answers

Answer 1

Answer:

Mn

Explanation: 4th shell so 4th row and count 7 from the left most column


Related Questions

What are the steps to naming an ionic compound with both a polyatomic ion and transition metal.

Answers

Answer:

Write the name of transition metal as shown on the Periodic Table. Write the name and charge for the non-metal. If you have a polyatomic ion, use the Common Ion Table to find and write the formula and charge.

Explanation:

I hope this help you! :D

BRAINLIEST & 5 STARS & A FREE THANK YOU

Why was Wegener’s theory of continental drift almost completely discarded?
A. It didn’t explain how continents fit together.
B. It didn’t explain how mountains formed.
C. It wasn’t supported by fossil evidence.
D. It didn’t have a mechanism for how drift occurred.

Which of the following is evidence that the continents were once part of a supercontinent called Pangaea?
A. Island Arcs
B. Deep ocean trenches
C. Glacier scrapings
D. Mid-ocean ridges

Answers

Answer:

1: The speculation that continents might have 'drifted' was first put forward by Abraham Ortelius in 1596. The concept was independently and more fully developed by Alfred Wegener in 1912, but his hypothesis was rejected by many for lack of any motive mechanism. 2: The most obvious evidence for continental drift is that the continents appear to fit together like pieces of a puzzle. But scientists were skeptical , and Wegener needed additional evidence to support his hypothesis. Glaciers covered large areas that are now parts of these continents.

Answer:

1. D

2. C

Explanation:

1. Although now accepted, the theory of continental drift was rejected for many years, with evidence in its favor considered insufficient. One problem was that a plausible driving force was missing. A second problem was that Wegener's estimate of the speed of continental motion, 250 cm/year, was implausibly high.

2.The most obvious evidence for continental drift is that the continents appear to fit together like pieces of a puzzle. But scientists were skeptical , and Wegener needed additional evidence to support his hypothesis. Glaciers covered large areas that are now parts of these continents.

heat alwais moves from ____ to _____.

Answers

Answer: left to right

Explanation:

Left to right just looked it up

In an exothermic reaction, the average kinetic energy of the particles of matter ib the products _____
1. decreases
2.stays the same
3. increases ​

Answers

Answer:

decreases

Explanation:

I'm hope it's correct

When there is an exothermic reaction so here the average kinetic energy of the particles of matter ib the products is option 1. decrease.

What is an exothermic reaction?

In terms of thermochemistry, an exothermic reaction means the reaction where the total standard enthalpy should change so ΔH⚬ is negative. Also it should be release heat.

So based on this, When there is an exothermic reaction so here the average kinetic energy of the particles of matter ib the products is option 1. decrease.

Learn more about reaction here: https://brainly.com/question/18358257

By February of 1861, how many states seceded from the Union?
5
11
9
7

Answers

11 states seceded the from the union in 1861

Answer:

D. 7

Explanation:

i did it

What do all of the inventors discussed in this lesson have in common?
1. All of the inventors can be characterized as problem-solvers.
2. All of the inventors used engineering principles to create new things.
3. All of the inventors created new things as children.
4. All of the inventors needed mathematics principles to formulate solutions.
PLEASE I NEED helppp

Answers

What’s the question? But I think it’s 4 that would make the most sense but I don’t know because I don’t know what the lesson was about.

The answers plzzzzzzz

Answers

Answer:

ok, whats the question

Explanation:

which one is you fav one

Answers

Answer:

the 3rd one

Explanation:

The purple and yellow one is my fav!

What element is added to copper to make bronze? Why is this important for making bells?

Answers

Answer:

The correct answer is - tin.

Explanation:

Tin is the element that is mixed with copper to make bronze as bronze has many unique properties such as crisp sound quality and hardness. The hardness of the bronze allows them to make a good quality sound is come by adding tin to copper restricts the free flow of electrons of the copper atoms.

The pure metals have molecules present in an orderly manner and allow the electrons to free flow. This is why bell makers use bronze as it does not allow electrons to move freely which makes it hard and makes a good sound.

18. How is the kinetic energy of molecules changing when the molecules move faster?
The kinetic energy ...
a
is not changing
b
depends on the molecules.
С
is decreasing.'
d
is increasing
Scroll for more

Answers

Answer:

d

Explanation:

the more movement the more energy

Can someone help? I don’t understand at all

Answers

Na = 2 atoms

Cl = 2atoms

F = 2 atoms

Further explanation

Given

Skeleton equation(unbalanced equation) :

NaCl+F2⇒NaF+Cl2

Required

The number of atoms

Solution

We balance the reactions to find the reaction coefficient, which is then used to calculate the number of atoms in the reactants and products

Balanced equation

2NaCl + F2 → 2NaF + Cl2

A balanced reaction will show that the number of atoms in the reactants and products is the same

Reactants :

Na = 2 atoms

Cl = 2atoms

F = 2 atoms

Products :

Na = 2 atoms

F = 2 atoms

Cl = 2 atoms

protons are one of the heavier pieces of an atom. true or false?

Answers

Answer:

true

Explanation:

please help thank you

Answers

I believe the answer is a but if not I am so sorry

Why did early people most likely choose to settle in Mesopotamia?

Answers

Answer:

People wanted to settle there because it had good living conditions. There was rich soil, and lots of water sources.

I hope this helps!

Review the poster.

https://www.cdc.gov/handwashing/pdf/wash-your-hands-fact-sheet-508.pdf

What is the greatest advantage of using a poster to present the information in “Stop Germs! Wash Your Hands”?


A poster that features brief sentences conveys urgency and simplifies content.


The extensive detail in posters captures viewers and causes them to stop and read.


The colors and images of a poster often convey a stronger message than words.


A poster appeals to several senses at once, which makes it hard to ignore.

Answers

A. A poster that features brief sentences conveys urgency and simplifies content.

Please help me its balancing the equation

Answers

Answer:

1, 2, 2, 1

Explanation:

Does the following compound contain a polyatomic ion? LiC2H3O2
Yes
No

Answers

Answer:

yes

Explanation:

the polyatomic ion is acetate, C2H3O2

A car left from its initial position at 6 pm. The car arrived at its final position at 11pm. How much time did it take the car to arrive ?

Answers

Answer:

5 hours.

Explanation:

Given that,

Initial time, [tex]T_i=6\ pm[/tex]

Final time, [tex]T_f=11\ pm[/tex]

We need to find how much time did it take the car to arrive.

Time =  final time-initial time

= 11 pm - 6 pm

= 5

So, it takes 5 hours by car to arrive.

PLEASE HELP ME ILL GIVE BRAINLIEST

Answers

Answer:

TRUE :)

Explanation:

blood is pumped through the pulmonary artery to the lungs, where it picks up oxygen and releases carbon dioxide.

Answer:

False

Explanation:

it takes it to tha lungs.

Newton's first law is demonstrated in what station?​

Answers

Answer:

hope this helps!

Explanation:

This law states that a still object will stay still unless a force pushes or pulls it. A moving object will stay moving unless a force pushes or pulls it. Gravity and friction are forces that constantly push and pull the "stuff" on earth. So, when we roll a ball, it slowly comes to a stop.


PLS HELPPPPPPPPPPPPP

Answers

Answer:

3. Structural features

The answer is the third sentence.

Balance the chemical equation. Based on the equation, how many grams of bromine are produced by the complete reaction of 11 grams of potassium bromide?

Answers

Answer:

Explanation:

The balanced chemical equation is Cl2 + 2KBr → 2KCl + Br2. The amount of bromine is calculated as follows:

11.0 g KBr (1mol KBr/119.002g KBr * 1mol Br2/2mol KBr * 159.808g Br2/1mol Br2= 7.39 g Br2.)

The objects potential energy at point Y is less its potential energy at which of the following points

Answers

Answer:

C

Explanation:

increase potential energy ( in motion)

DESPERATE WILL GIVE BRAINLIST AND THANKS (PLEASE HURRY )
Look at the Punnett square below which shows the cross between two frogs. Green is the dominant skin color while brown is the recessive skin color. What are the phenotype probabilities?



Question 8 options:

50% green, 50% brown


25% green, 25% brown


100% green, 0% brown


75% green, 25% brown

Answers

A.Green and brown are equally expressed so they are both dominant. (50%)


B.Green is more common than brown so more green genes are passed on. (25%)


C.The gene for green color is dominant over the gene for brown color. (0%)



D.The gene for brown color is dominant over the gene for green color. (100%)

what is the amount of molecules in 5 moles of nitrogen gas, N2?​

Answers

The amount of molecules= 3.01 x 10²⁴

Further explanation

Given

5 moles of N2

Required

The number of molecules

Solution

The mole is the number of particles(molecules, atoms, ions) contained in a substance  

1 mol = 6.02.10²³ particles

Can be formulated

N=n x No

N = number of particles

n = mol

No = Avogadro's = 6.02.10²³

For 5 moles :

= 5 x 6.02 x 10²³

= 3.01 x 10²⁴

why might genetically identical twins have different phenotype

Answers

Answer:

They may have different phenotypes because of differences in their environments, such as nutrition and healthcare. Why might genetically identical twins have different phenotypes?  Any genes on the same chromosome could be linked genes, whereas only genes on sex chromosomes can be sex-linked genes.

Explanation:

Due to the effects of the environment, genetically identical twins might have different phenotype.

What is phenotype?

The qualities or visible characteristics of an organism are its phenotype. It depends on how the environment and the genotype, or genetic code, of the organism interact.

Although human monozygotic twins as well as other genetically identical species may share startling physical similarities, they frequently differ in key characteristics, such as complicated diseases. The effects of the environment have generally been blamed for this variance across organisms with essentially identical chromosomal DNA sequences.

Therefore, due to the effects of the environment, genetically identical twins might have different phenotype.

To know more about phenotype, here:

https://brainly.com/question/11197451

#SPJ2

Cell organizations^ pls help

Answers

Cell > tissue > organ > organ system > whole organism

Answer:

Multicellular organisms have cells that are organized in specific ways to perform specialized functions. From the most complex level to the simplest level, the five levels of organization for the sheep should be ordered as:

whole organism → organ system → organ → tissue→ cell

Explanation:

how many atoms are in 2.85x10^3 g of gallium

Answers

Answer:

2850 grams I hope this help

Help please!! I'll name you brainliest!!

Answers

the answers is cacih2

wjdgagqjdhdgahahdhvddvvsvshsd

How many orbitals exist for s shape

Answers

The s sublevel has only one orbital
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