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
Lynna [10]
2 years ago
9

What period and group (number and name) is Selenium in?

Chemistry
1 answer:
Maru [420]2 years ago
8 0

Answer:

Group 16  Melting point 220.8°C, 429.4°F, 494 K

Period 4  Boiling point 685°C, 1265°F, 958 K

Explanation:

You might be interested in
Which radioisotopes have the same decay mode and have half-lives greater than
AveGali [126]

The correct answer is (3)


I-131 and P-32


The explanation:


according to attached table:


- we can see that the half life of p 32 is 14.28d (more than one hour)

- and the half life of I-131 is 8.021 d (more than one hour)


and They both have β- decay mode and with half-lives greater than hour.


4 0
3 years ago
Read 2 more answers
The part of the ocean floor that separates the oceanic rise from the thick continental crust and is between the shoreline and th
BabaBlast [244]
It’s called the Margin. So D) Margin
4 0
3 years ago
What are 3 physical properties of aluminum foil
adell [148]
Solid, ductile (can conduct heat), malleable (can be shaped differently).
4 0
3 years ago
[GT.02]Which of these forces in carbon-14 isotopes transforms a neutron into a proton?gravitational forceselectromagnetic forces
Dmitrij [34]

Answer:

The weak nuclear force.

Explanation:

This force is active in radioactivity.

3 0
3 years ago
Consider the reaction below.
brilliants [131]
In the balanced reaction shown, there are twice as many moles of water as oxygen. If 13.35 moles of oxygen are reacted, 26.70 moles of water is formed.
5 0
3 years ago
Read 2 more answers
Other questions:
  • PLEASE HURRY! What is the relationship between distance and magnetic attraction? Give me some examples please. Pictures needed.
    7·1 answer
  • A certain skin lotion is a fine mixture of water and various oils. This lotion is cloudy and cannot be separated into oil and wa
    12·1 answer
  • How many molecules are present in 78.9 g of silver nitrate (AGNO3)?
    6·1 answer
  • Which exponential expression represents the numerical expression 112⋅112⋅112⋅112? ​(112)4​
    14·2 answers
  • What is produced and released into the atmosphere when people burn fossil fuels?<br> help plzzzz
    7·1 answer
  • At which temperature do particles stop moving entirely?
    9·1 answer
  • How many moles of oxygen gas occupy 67.2 L of volume at STP?<br> A 0.333<br> B 3.00<br> C 1.00
    7·1 answer
  • Using your knowledge of properties of matter, choose the correct description: Question 3 options: physical prop. are luster, col
    5·1 answer
  • Which element in the list is the most reactive?<br><br> C<br><br> Ba<br><br> S<br><br> Cs
    15·1 answer
  • Select the correct answer.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!