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
Andreas93 [3]
3 years ago
14

What are groups on the periodic table? How many are there?

Chemistry
2 answers:
Amiraneli [1.4K]3 years ago
6 0

Explanation:

Groups are numbered 1–18 from left to right. The elements in group 1 are known as the alkali metals; those in group 2 are the alkaline earth metals; those in 15 are the pnictogens; those in 16 are the chalcogens; those in 17 are the halogens; and those in 18 are the noble gases.

s344n2d4d5 [400]3 years ago
5 0

Answer:

The s-, p-, and d-block elements of the periodic table are arranged into 18 numbered columns, or groups.

You might be interested in
'Suppose you take 0.0332 kg of ammonium carbonate and dissolve it using 0.0395 kg of water. What would be the mass percent conce
VMariaS [17]

The solution is 45.7 % (NH₄)₂CO₃ by mass.

Mass of solution = 0.0332 kg + 0.0395 kg = 0.0727 kg

% (NH₄)₂CO₃ = Mass of (NH₄)₂CO₃/Total mass × 100 % = 0.0332 kg/0.0727 kg × 100 % = 45.7 %


8 0
3 years ago
'Synthetic detergents are better than soaps'. Justify this statement​
Shtirlitz [24]

Answer:

Synthetic detergents can be used for washing purposes even when the water is hard, whereas soaps are not suitable for washing with hard water. This is because of the fact that synthetic detergents can lather with hard water. Hence, Synthetic detergents better than soaps.

3 0
3 years ago
Read 2 more answers
Where do food molecules for cecropia trees come from?
Oliga [24]

Answer:

Central and South American forests.

Explanation: https://brainly.in/question/7540305

8 0
3 years ago
Why are the red blood cells crescent-shaped​
Lesechka [4]

Answer:

The ref blood cells are shaped like sickles or crescent moons, sticky cells can get stuck in small blood vessels which can slow or block blood flow and oxygen to parts of the body

3 0
2 years ago
Read 2 more answers
How does more greenhouse gases in the Earth's atmosphere affect earth's temperature?
Mumz [18]

Explanation:

Greenhouse gasses in Earth's atmosphere affect Earth's temperature by making it hotter. Greenhouse gasses make the Earth warmer by trapping heat. You can think of greenhouse gasses as Earth's blanket.

5 0
3 years ago
Read 2 more answers
Other questions:
  • Plz help me and I promise I will make you he brainiest
    8·1 answer
  • Why do astronauts have to wear pressurized suits in space? Need to know for homework!
    10·1 answer
  • What type of atoms typically form covalent bonds
    12·1 answer
  • Determine the energy in joules of a photon whose frequency is 3.55 x10^17 hz
    8·1 answer
  • What metric measurement is similar to a mile?
    10·2 answers
  • What would most likely happen as a result of the generator in a wind turbine breaking?
    6·2 answers
  • A/1 * B/C =D, You find yourself with 17 guilders (a gold coin) but you are planning on taking a trip to a country where the loca
    14·2 answers
  • Which represents the overall (net) reaction of this mechanism: step 1: H2O2 + I- → H2O + OI- step 2: H2O2 + OI- → H2O + O2 + I-
    14·1 answer
  • What amount of ice must be added to 250 g of water at 15°c to cool the water to 0°c and have no ice left
    5·1 answer
  • Will changing the mass or volume of water change its density?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!