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
myrzilka [38]
3 years ago
12

The atoms of a certain element each contain 19 protons and 1 valence electron. Which statement correctly identifies this element

and describes its chemical reactivity?
Chemistry
1 answer:
Leya [2.2K]3 years ago
3 0

Answer

its a potassium elements

Explanation:

K 2,8,8,1     period num 4

                  group 1A

or 1s1 ,2s2 2p6, 3s1

its a metal reacted  rapidly with water to form a colorless basic solution of potassium hydroxide (KOH) and hydrogen gas (H2). The reaction continues even when the solution becomes basic. The resulting solution is basic because of the dissolved hydroxide. The reaction is exothermic.

You might be interested in
How many dozen (dz) eggs are needed to make 12 muffins? What about 15.5
NARA [144]

Answer:

I think its 1.2 cause I divided 15.5 with 12 and got 1.2 as an answer

8 0
3 years ago
Read 2 more answers
Would someone mind helping me? I really need this answer but I'm so confused. I would appreciate any help :) and if you get the
Svetllana [295]

Answer:

A

Explanation:

liquids thake the shape of what holds them so shape is changing and volume is the same

7 0
3 years ago
Read 2 more answers
In what sense are photons quantized?
lara [203]

Answer:

D. Each photon has a specific amount of energy​

Explanation:

5 0
3 years ago
How many moles in 250g of CBr 4
EleoNora [17]

Answer:

fzdfxbgfdgbfbfggf

Explanation: fregrgsrg5

7 0
3 years ago
Plzz!!! I need help now<br><br><br> this is science
Neko [114]
1)300-100=200N
2)300+100=400N
3)200+100-300=300-300=0N
5 0
3 years ago
Other questions:
  • Which compounds yield hydrogen ions as the only positive ions in an aqueous solution?
    13·2 answers
  • the general name for a substance added to a reaction that affects the rate but is not consumed in the reaction is called a_____.
    10·2 answers
  • How many grams of kbr must be dissolved to make 25.0 ml of a solution that has a molarity of 0.85 m?
    6·1 answer
  • Solid potassium chlorate decomposes upon heating to form
    6·1 answer
  • The average osmotic pressure of blood is about 7 atm. Therefore​
    10·1 answer
  • What are limitations of a conclusion? I am doing a science lab write-up and under the conclusion it asks for limitations of the
    10·1 answer
  • The heat of vaporization of an unknown liquid is 1,340 Joules per gram. What is the minimum number of Joules needed to change 20
    9·1 answer
  • A balloon is filled with 3.00 L of helium at a pressure of 765 torr. What is the volume of the balloon at an altitude where the
    5·1 answer
  • Is detergent unicellular
    9·1 answer
  • How many moles of CO2 can be formed from 10 g of CH4?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!