How many electrons does it need to complete it's outer energy level in a phosphorous atom

1 answer:

4 0

It needs 5 electrons. I would start by looking at a periodic table. The numbers on top are group numbers. Below each number is roman symbols like (lA, llA, IIIB, etc.). Phosphorus is in group 15. Under fifteen it has the Roman numeral of 5 (VA). There is a pattern in the periodic table. Each Roman numeral stands for how many valence electrons it has. Valence electrons are the outermost electrons of an atom.

You might be interested in

A histologist examines a tissue slide and observes many fibers tightly packed together in a parallel arrangement. a few cells ca

neonofarm [45]

Answer: Dense regular (fibrous) connective tissue.

Explanation:

Connective tissue is a tissue that performs various functions such as binding, connecting and supporting the other organs or tissues or separating one tissue from another.
Dense regular connective tissue connects various tissues present in the body.
Since the fibers are tightly packed, this tissue is dense and fibrous, and because the arrangement of the fibers is in parallel fashion, it is of the regular type.

8 0

2 years ago

Chromosomes only exist inside gametes true or false

netineya [11]

The male human has a sperm cell and the female has an egg cell. The cells from the male and female that combine to form a zygote are called gametes. The human sperm and egg cells each contain 23 chromosomes. . A combination of gametes forms a zygote with 46 chromosomes. The type of cell division that produces gametes with half the normal chromosome number is the meiosis. Meiosis is the type of cell division used in sexual reproduction. It will occur in the testes and ovaries.Chromosomes get shuffled when eggs and sperm are made. Though most adult cells contain two sets of chromosomes, sperm and egg cells are different. These special cells have just one chromosome from each pair. Which chromosome they get from each pair is random, making each sperm or egg cell unique. There is also a bit of mixing before the chromosomes are sorted into individual sperm or egg cells. Chromosomes from each pair in a mother or father, respectively, make contact and exchange pieces of DNA, creating hybrid chromosomes.

8 0

2 years ago

Research a article on how climate change effects polar bears. 7-10 sentences. And don’t use any articles that are .com and attac

d1i1m1o1n [39]

Answer: https://www.wwf.org.uk/learn/wildlife/polar-bears#:~:text=Challenges%20affecting%20polar%20bears&text=The%20Arctic%20is%20warming%20about,ice%20to%20raise%20their%20young.

https://www.carbonbrief.org/polar-bears-and-climate-change-what-does-the-science-say

Explanation:

3 0

2 years ago

What ways do enzymatic catalysts increase the rates of reactions? they shift the reaction equilibrium toward the products they d

Elodia [21]

This is a question regarding how enzymes increase the rates of reactions. There are choices and the instructions is to check all that apply.

1. They shift the reaction equilibrium towards the products. 
2. They increase the concentration of the reactants. 
3. They lower the activation energy of the reaction. 
4. They decrease the free energy of a reaction. 
5. They promote the formation of a transition state.

The correct answers in this question are "they lower the activation energy of the reaction" and "they promote the formation of a transition state". Enzymes do not necessarily shift the the reaction equilibrium to the products, as there are reversible enzymatic reactions that can reverse the pathway back to the substrates. They do not increase the concentration of the reactants as the concentration of the reactants is an independent variable in this process. They do not decrease the free energy of activation as this is a constant in every reaction depending on the substrates and the products.

Enzymes do, however, lower the activation energy of the reaction meaning it will take less energy and effort for the substrates to reach the activation energy to transform it to its transition state then to the products. With this said, enzymes promote the formation of a transition state.

Attached is a simplified image on how enzymes work.

7 0

2 years ago

Read 2 more answers

What are the responsibilities of the region of the brain highlighted below? Highlighter portion is at the bottom of the brain, f

monitta

The correct answer is "regulating important involuntary bodily functions such as blood pressure, heart rate, breathing and swallowing".
The area highlighted in this example is the posterior part of the brain, called the brainstem. The brainstem is comprised of three important parts, the medulla, the pons and the midbrain. The basic functions of this brain area include breathing, heart rate and sleeping.

6 0

3 years ago

Read 2 more answers