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
tamaranim1 [39]
3 years ago
7

Determine the number of protons and neutrons in plutonium-239 and enter its symbol in the form azx.

Chemistry
1 answer:
Komok [63]3 years ago
7 0
Answer:

number of protons: 94
number of neutrons: 145

  239
       Pu
   94

Explanation:

1) The atomic number, Z, of plutonium is Z = 94, i.e plutonium 94 protons

2) Plutoniun-239 is the isotope with mass number 239.

3) Mass number = number of protons + number of neutrons =>

number of neutrons = mass number - number of protons = 239 - 94 = 145

4) The notation requires that you indicate the symbol of the element with the atomic number (number of protons) and the mass number.

You put the mass number as a superscript at the left side of the symbol and the atomic number as subscript to the left of the symbol.

So, in this case the symbol is Pu, the superscript to the left is 239 and the subscript to the left is 94.

  239
       Pu
   94


You might be interested in
The electrons in the outer shell of an atom are called:<br> outer<br> ionized<br> polar<br> valence
Marrrta [24]
Valence.

The electrons in the outer shell of an atom are called valence electrons. 

Valence electrons determine whether the an element is ready form compounds. These electrons can be gained, lost, or shared in the formation of compounds.
7 0
3 years ago
Covalent Bonds <br><br> How many covalent bonds can Nitrogen atoms make ?
notsponge [240]
A nitrogen atoms can make 3 covalent bonds because it has three unpaired electrons

6 0
3 years ago
Read 2 more answers
Some scientists believe that comets originate from the...​
deff fn [24]

Answer:

Scientists believe that comets are the debris left from the solar nebula which condensed to form the Sun and planets in our solar system. Most comets are thought to originate in a huge cloud called the Oort Cloud. ... Comets follow a regular orbit around the Sun.

Hope this helps! :)

Explanation:

3 0
3 years ago
What element does gold identity as
ICE Princess25 [194]
Gold is a chemical element with symbol Au (from Latin: aurum) and atomic number 79, making it one of the higher atomic number elements that occur naturally. In its purest form, it is a bright, slightly reddish yellow, dense, soft, malleable, and ductile metal.
8 0
3 years ago
Which noble gas is closest to sulfur on the periodic table
Irina-Kira [14]
Phosphate because it's the closest to sulfur on the periodic 2
6 0
3 years ago
Other questions:
  • The subatomic particle that has. Positive charge and is found in the nucleus an atom is
    8·1 answer
  • Will a cold snowball give off cold air?
    6·1 answer
  • The independent variable has control and affects the
    5·2 answers
  • I need help filling out nitrogen
    13·1 answer
  • What system is responsible for transporting food, waste, and gases throughout the body?
    7·1 answer
  • Helppp nowwww plsss
    13·1 answer
  • Which diagram represents an electrically neutral atom​?
    12·2 answers
  • GIVING BRAINLIEST!
    15·1 answer
  • Bill's recipe for onion soup calls for 4.0 lb of thinly sliced onions . if an onion has an average mass of 115 g , how many onio
    9·1 answer
  • How many grams of NaOH are contained in 500 mL of a 0.80 M sodium hydroxide solution?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!