1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ziro4ka [17]
3 years ago
6

Which of these elements has two electrons in its outer p orbitals? A. helium (He) B. barium (Ba) C. nitrogen (N) D. silicon (Si)

E. sulfur (S)
Chemistry
2 answers:
Agata [3.3K]3 years ago
7 0

Hid BadAssWithABow,

Your Question:

Which of these elements has two electrons in its outer p orbitals? A. helium (He) B. barium (Ba) C. nitrogen (N) D. silicon (Si) E. sulfur (S)

Answer:

A. helium (He)

The reason its helium is because helium has 2 electrons.

maksim [4K]3 years ago
3 0

Answer:

D. Silicon

Explanation:

A) Atomic number of He = 4

Valence Electron configuration = 1s²

B) Atomic number of Ba = 56

Valence Electron configuration = 6s²

C) Atomic number of N = 7

Valence Electron configuration = 2s²2p³

D) Atomic number of Si = 14

Valence Electron configuration = 3s²3p²

E) Atomic number of S = 16

Valence Electron configuration = 3s²3p⁴

Thus, silicon has 2 electrons in its outer p orbitals

You might be interested in
What type of molecule are these and what is the strongest IMFs in between?​
Aneli [31]

Answer:

CH2O is formaldehyde a covalent compound and its intermolecular forces are week

KCl is an ionic compound formed by electrostatic force of attraction between positive and negative charge. Ionic compounds also exists in three dimensional crystal lattic that is why intermolecular forces in KCl is stronger.

Moreover melting point of KCl is higher than CH2O

Explanation:

6 0
2 years ago
In a collision, a 25.0 kg mass moving at 3.0 m/s transfers all of its momentum to a 5.0 kg mass. What is the velocity of the 5.0
Trava [24]
Don’t press the link above me. It causes viruses
7 0
3 years ago
Which of these is not a covalent molecule?<br> 1. F2<br> 2. CO<br> 3. LiF<br> 4. NH3
beks73 [17]

LiF or lithium fluoride is the non covalent molecule or ionic compound.

Option 3.

<h3><u>Explanation:</u></h3>

Covalent molecules are those molecules which do have actual bonds between the atoms present in the molecule by sharing of the electrons. But in ionic molecules, there's no actual bonds between the atoms, but the oppositely charged ions are attracted towards each other by means of electrostatic force of attraction.

The molecules that are formed by the atoms with high electronegativity and electropositivity are actually ionic because the atoms with high electronegativity are able to actually gain electron readily and the atoms with high electropositivity are actually ready to give the electrons to the electronegative elements.

Lithium is highly electropositive and fluoride is highly electronegative. So they establish an ionic bond. But other molecules like fluorine molecule has both the electronegative elements, Carbon monoxide has carbon which isn't electropositive highly, and ammonia has hydrogen which isn't electropositive.

So lithium fluoride is the ionic compound.

4 0
3 years ago
Matter is made up of heat energy and ___________energy?
ella [17]
You’re correct, matter is made up of heat energy and chemical energy

all matter contains heat because it is the result of the movement of atoms, molecules, or ions in solids, liquids, and gases.

all matter also contains chemical energy. chemical energy is stored in the bonds of chemical compounds so atoms and molecules are held together by chemical energy

hope this helps :)
3 0
3 years ago
People take antacids, such as milk of magnesia, to reduce the discomfort of acid stomach or heartburn. The recommended dose of m
Llana [10]

Answer:

V_{HCl}=0.208L=208mL

Explanation:

Hello,

In this case, since the chemical reaction is:

2HCl+Mg(OH)_2\rightarrow MgCl_2+2H_2O

We can see that hydrochloric acid and magnesium hydroxide are in a 2:1 mole ratio, which means that the neutralization point, we can write:

n_{HCl}=2*n_{Mg(OH)_2}

In such a way, the moles of magnesium hydroxide (molar mass 58.3 g/mol) in 500 mg are:

n_{Mg(OH)_2}=500mg*\frac{1g}{1000mg}*\frac{1mol}{58.3g}  =0.00858mol

Next, since the pH of hydrochloric acid is 1.25, the concentration of H⁺ as well as the acid (strong acid) is:

[H^+]=[HCl]=10^{-pH}=10^{-1.25}=0.0562M

Then, since the concentration and the volume define the moles, we can write:

[HCl]*V_{HCl}=2*n_{Mg(OH)_2}

Therefore, the neutralized volume turns out:

V_{HCl}=\frac{2*0.00858mol}{0.0562\frac{mol}{L} }\\ \\V_{HCl}=0.208L=208mL

Best regards.

3 0
3 years ago
Other questions:
  • For which of the following reactions is ΔH∘rxn equal to ΔH∘f of the product(s)?You do not need to look up any values to answer t
    8·1 answer
  • Why doesn't the universe collapse under the force of gravity? Please tell where you got the information from and if it is correc
    13·2 answers
  • The compound mgso4, epsom salts, is used to soothe sore feet and muscles. how many grams will you need to prepare a bath contain
    11·2 answers
  • What is the relationship between isotopes, mass number, neutrons?
    10·1 answer
  • What properties of carbon's abiliyu to form different large and complex structures ?
    9·1 answer
  • On a drawing showing the movement of a kickball, you see an arrow above the ball labeled "10 m/s" and the arrow shows BOTH the s
    7·2 answers
  • PLEASE HELP MEEEEEEEEEEEEEEEEEEE
    6·2 answers
  • 1. A gas at 24.0 Celsius and.900 atm fills a 0.95 Liter container.
    12·1 answer
  • What group does this element belong to?
    5·2 answers
  • In a 0.735 M solution, a weak acid is 12.5% dissociated.(a) Calculate the H₃O⁺, pH, OH⁻, and pOH of the solution.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!