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
kykrilka [37]
3 years ago
9

Valency of oxygen is two. why??​

Physics
2 answers:
Bogdan [553]3 years ago
8 0

Answer:

because it gains two electrons to become a stable state.

AlexFokin [52]3 years ago
6 0

Answer:

Tha valency of Oxygen is 2 because it need two atom of hydrogen to form water.

You might be interested in
Define :density٬archimedes principle
olga2289 [7]

Answer:

density is defined as the amount of mass contained in unit volume of a body .its si unit is kg/m*3

5 0
3 years ago
Another athlete using a different spring exerts an average force of 400 N to enable her
babymother [125]

Answer:84Nm

Explanation:

force=400N

Distance=0.210m

Workdone=force x distance

Workdone=400 x 0.210

Workdone=84Nm

6 0
3 years ago
The phases of the moon depend on how much of the lighted side of the moon can be seen from Earth.
Ostrovityanka [42]

Answer:

true

Explanation:

if there is no light it's different from when there is

3 0
3 years ago
Stars of spectral type A and F are considered ________.
LekaFEV [45]

Answer:

<u>B. the stars of spectral type A and F are considered reasonably to have habitable planets but much less likely to have planets with complex plant - or animal - like life.</u>

Explanation:

The appropriate spectral range for habitable stars is considered to be "late F" or "G", to "mid-K" or even late "A". <em>This corresponds to temperatures of a little more than 7,000 K down to a little less than 4,000 K</em> (6,700 °C to 3,700 °C); the Sun, a G2 star at 5,777 K, is well within these bounds. "Middle-class" stars (late A, late F, G , mid K )of this sort have a number of characteristics considered important to planetary habitability:

• They live at least a few billion years, allowing life a chance to evolve. <em>More luminous main-sequence stars of the "O", "B", and "A" classes usually live less than a billion years and in exceptional cases less than 10 million.</em>

• They emit enough high-frequency ultraviolet radiation to trigger important atmospheric dynamics such as ozone formation, but not so much that ionisation destroys incipient life.

• They emit sufficient radiation at wavelengths conducive to photosynthesis.

• Liquid water may exist on the surface of planets orbiting them at a distance that does not induce tidal locking.

<u><em>Thus , the stars of spectral type A and F are considered reasonably to have habitable planets but much less likely to have planets with complex plant - or animak - like life.</em></u>

4 0
3 years ago
In non-ferromagnetic materials, most of the electrons are _____.
OleMash [197]

It hink that it is the 2nd one

7 0
3 years ago
Read 2 more answers
Other questions:
  • An object accelerates from rest to a velocity of 4m/s over a distance of 20m what is the acceleration
    5·1 answer
  • What will be the acceleration of a 40-kilogram object that is pushed with a net force of 80 newtons?
    11·1 answer
  • What is formed when the rock making up a tectonic plate breaks and moves Select one of the options below as your answer:
    8·1 answer
  • Two circular coils are concentric and lie in the same plane. The inner coil contains 170 turns of wire, has a radius of 0.0095 m
    14·1 answer
  • What percent of the energy used in the united states come from burning fossil fuels?
    11·1 answer
  • An airplane which intends to fly due south at 250 km/hr experiences a wind blowing westward at 40 km/hr. What is the actual spee
    6·1 answer
  • Which of the following represent an atom from period 3?WILL MARK BRAINLIEST
    11·1 answer
  • If you set up set up your account to use a security key, can you still get in without having the physical key ?
    5·1 answer
  • How many neutrons are in K-37?
    5·1 answer
  • Predict the magnitude of the gravitational force....
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!