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Nitella [24]
2 years ago
12

Important parts of stydi g physics

Physics
1 answer:
sladkih [1.3K]2 years ago
7 0

Answer:

put your question in proper way' i hope you understand.

Explanation:

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Which element has atoms with valence electrons in a higher energy level than those of calcium (Ca)?
enyata [817]

Here, we are required to determine which element has atoms with Valence electrons in a higher energy level than those of calcium.

The Valence electrons of the Caesium, Cs atoms has higher energy level than those of Calcium.

First, we need to determine the electronic configuration of each of the elements

  • Therefore the Calcium electron configuration will be:
  • 1s²2s²2p⁶3s²3p⁶4s²

  • Therefore, for Cs Electron Configuration:
  • 1s² 2s²2p⁶3s²3p⁶3d¹⁰ 4s²4p⁶4d¹⁰ 5s²5p⁶ 6s¹
  • Therefore, For lithium, The electron configuration of lithium is :
  • 1s²2s¹

  • For oxygen, Therefore the O electron configuration will be:
  • 1s²2s²2p⁴

  • For bromine, the electronic configuration is 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁵

Among the elements in the option, the Valence electrons of the Caesium, Cs atoms has higher energy level than those of Calcium.

This is so because the only Valence electron of Cs is located in the 6s orbital and as such has the highest energy level amongst all of the elements.

Read more:

brainly.com/question/17678749

7 0
3 years ago
Fast need answers <br>Find the amount of force if the body has pressure of 178 Pa on 18 mm²​
guajiro [1.7K]

Answer:

Force = 3.204Newton

Explanation:

Given the following data;

Pressure = 178

Area = 18 mm² to meter = 18/1000 = 0.018 m²

To find the force;

Force = pressure * area

Force = 178 * 0.018

Force = 3.204 Newton.

4 0
3 years ago
what is the speed of a boy moving around a circular park of radius 6m if he goes around the park in 20s
seropon [69]

Answer:

1.884 meters per second

Explanation:

s = d/t

d = C = 2πr = 2π(6) = 37.68 m

t = 20 s

s = (37.68 m)/(20 s)

s = 1.884 m/s

7 0
2 years ago
Read 2 more answers
There are two main types of exercise: (1) exercise, which uses oxygen for energy, and (2) exercise, which does not.
Goryan [66]

Answer:

b

Explanation:

6 0
3 years ago
Read 2 more answers
What is the wavelength of an electromagnetic wave?
gizmo_the_mogwai [7]

Answer: (A) The number of waves that pass a point in a certain amount of time.  

Explanation:

Electromagnetic waves are categorized according to their frequency f or, equivalently, according to their wavelength λ = c/f. Visible light has a wavelength range from ~400 nm to ~700 nm.

Frequency: Is the number of waves that pass a certain point in a specified amount of time.

Trough: The low point of the wave cycle.

Wavelength: The distance between two successive peaks.

Electromagnetic wave: One of the waves that are propagated by simultaneous periodic variations of electric and magnetic field intensity.

6 0
2 years ago
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