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
saveliy_v [14]
3 years ago
10

PLEASE HELP 30 POINTS PLS PLS

Chemistry
1 answer:
joja [24]3 years ago
8 0
22-yes, they belong to the same group
23- they are metals
24-Atoms of group 1 elements all have one electron in their outer shell. This means Na and K have the same valence electrons.
25-Metals are solids at room temperature, therefore Na and K are solid.
26- mass number=A=235
Protons=z=92
Neutrons=mass number-protons
Neutrons=A-Z
Neutrons=235-92
Neutrons=143
You might be interested in
A car with a mass of 1,000 kg is moving at a speed of 20 m/s. What is the car's kinetic energy?
shtirl [24]

The answer would be 200000 J. the equation for kinetic energy is 1/2 mass times velocity squared. 1/2 of 1,000 is 500. and 20*20 is 400. So, multiply 400 by 500, and that gives you your answer,

7 0
2 years ago
What is one way a pathogen can enter the body?
Ipatiy [6.2K]
I’m pretty sure it’s Nose
8 0
3 years ago
Read 2 more answers
Can u answer all of em
TiliK225 [7]

Answer:

one is across

Explanation:

8 0
3 years ago
The electron configuration filling patterns of some elements in group 6b(6) and group 1b(11) reflect the ______ of half-filled a
Fudgin [204]

The electron configuration filling patterns of some elements in group 6b(6) and group 1b(11) reflect the increasing stability of half-filled and completely filled sublevels.

<h2>What is electronic configuration?</h2>

The distribution of electrons in an element's atomic orbitals is described by the element's electron configuration. Atomic subshells that contain electrons are placed in a series, and the number of electrons that each one of them holds is indicated in superscript for all atomic electron configurations. For instance, sodium's electron configuration is 1s22s22p63s1.

Almost all of the elements write their electronic configurations in the same style. When the energies of two subshells differ, an electron from the lower energy subshell occasionally goes to the higher energy subshell.

This is due to two factors:

Symmetrical distribution: As is well known, stability is a result of symmetry. Because of the symmetrical distribution of electrons, orbitals where the sub-shell is exactly half-full or totally filled are more stable.

Energy exchange: The electrons in degenerate orbitals have a parallel spin and are prone to shifting positions. The energy released during this process is simply referred to as exchange energy. The greatest number of exchanges occurs when the orbitals are half- or fully-filled. Its stability is therefore at its highest.

To know more about electronic configuration, go to URL

brainly.com/question/26084288

#SPJ4

8 0
2 years ago
Which of the following is NOT a type of pseudoscience?
s344n2d4d5 [400]
The answer is C. SETI
7 0
3 years ago
Other questions:
  • How do you test a hypothesis using scientific inquiry
    8·1 answer
  • 90 POINTSSSS!!!
    8·1 answer
  • Which element is likely to gain one electron when it combines chemically with another element? a potassium b krypton c gold d ch
    12·1 answer
  • Identify the covalent compounds based on the names of the compounds. barium nitrate dinitrogen tetroxide boron trifluoride ammon
    10·2 answers
  • Cómo se formulan los hidroxidos?
    6·1 answer
  • Atoms contain nuclei with electrons orbiting
    10·1 answer
  • How many molecules are in 4 moles of carbon monoxide (CO)?
    11·1 answer
  • Question 13 of 25
    12·1 answer
  • Why is an ice cube less dense than liquid water?
    10·2 answers
  • Methane Gas (CH4) is an example of a(n) __________. *
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!