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
Maru [420]
2 years ago
14

A certain isotope has 53 protons 78 neutrons and 53 electrons. What is its atomic number? What is the mass number of this atom?

What is the name of this element? What is the name of this group of elements

Chemistry
1 answer:
statuscvo [17]2 years ago
5 0

Answer:

  1. 53 protons
  2. 131g
  3. Iodine
  4. Halogens

Explanation:

atomic no. = no. of protons

= 53 proton

mass = no. of protons + no. of

neutrons

= 53 + 78

= 131

You might be interested in
1093.5 rounded into 3 sig figs
Ray Of Light [21]
Significant figures means the number of important figures, 0 not included.

This means that the answer is 1094.00

Hope this helps! :)

3 0
2 years ago
What’s the formula equation for
jeyben [28]
If you have a magnesium for every oxygen, then you have to start with two magnesiums. So the balanced equation is 2 Mg + O2 2 MgO.

And

CaCO3———→CaO + CO2

I hope it helped!

7 0
3 years ago
Read 2 more answers
Dfine chemical reaction​
allsm [11]

Answer:

A process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.

Explanation:

Pretty much just not a physical reaction or otherwise

4 0
2 years ago
What types of elements are shown in the polyatomic ions in model 1?
boyakko [2]
These ions are disjoint by the charge on the ion into four dissimilar tables and listed alphabetically within each table. Each polyatomic ion, has it called, chemical, formula, two dimensional drawing, and three dimensional representation are given.
The three dimensional buildings are drawn as CPK models. CPK structures represent the atoms as sphere, where the radius of the sphere is equal to the van der waals radius of the atom; these buildings give a measure up the volume of the polyatomic atom.
4 0
3 years ago
PLZ Help i need to turn it in before Friday ​
nikklg [1K]

Answer:

What type of work do u have? LOL

Explanation:

8 0
2 years ago
Other questions:
  • Which of the following is a chemical property? A. Boiling point B. Electrical conductivity C. Flammability D. Malleability
    5·1 answer
  • The complete combustion (reaction with oxygen) of liquid octane (C8H18) a component typical of the hydrocarbons in gasoline, pro
    10·1 answer
  • If a temperature increase from 12.0 ∘c to 22.0 ∘c doubles the rate constant for a reaction, what is the value of the activation
    5·1 answer
  • The radioisotope that has the longest half-life is the best to use in powering planet and space exploration vehicles because the
    6·2 answers
  • The radius of an atom is closest in size to a​
    15·1 answer
  • Because the the individual components of any mixture are not _____ to each other, the composition of those components can vary.
    6·1 answer
  • When is evaporation used
    14·2 answers
  • Oxygen
    12·2 answers
  • I really need help! If I have 17 moles of gas at a temperature of 67°C, and a pressure of 5.34 atmospheres, what is the volume o
    15·1 answer
  • How did the scientists create atoms of element 115
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!