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
kolbaska11 [484]
3 years ago
14

How many elements does a compound need to form?

Chemistry
2 answers:
Llana [10]3 years ago
8 0

Answer:

A compound is a substance that contains two or more elements chemically combined in a fixed proportion.

Vinvika [58]3 years ago
4 0

Answer:

two

Explanation:

When two distinct elements are chemically combined, chemical bonds form between their atoms. the result is called a chemical compound

You might be interested in
In which are the ionic solids ranked in order of increasing melting point?
abruzzese [7]

Answer:A

Explanation:

The melting points of solids depend in the relative sizes of ions in the ionic lattice. The smaller the relative sizes of the ions, the higher the lattice energy and the stronger the lattice hence higher melting point. Comparing relative ionic sizes, fluoride ion is lesser in size than chloride ion hence NaF has a higher melting point than NaCl.

7 0
3 years ago
Vehicle emissions devices incorporate a chemical reaction to help control carbon monoxide pollution: 2CO+ O2->2CO2
BigorU [14]

<em>It convert carbon monoxide faster </em>

3 0
3 years ago
Read 2 more answers
1. Using the Slater rule, determine the effective nuclear charge of platinum.
AleksandrR [38]

Answer:

Z* = 3.55

Explanation:

Slater rule says that:

Z*= Z - S

Z* be the nuclear effective charge

Z is the nuclear charge

S is the shielding constant

First we write the electronic configuration of platinum:1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{6} 3d^{10} 4s^{2} 4p^{6} 4d^{10} 5s^{2} 5p^{6} 4f^{14} 5d^{9} 6s^{1}

The first Slater rule says that we need to group:

(1s^{2}) (2s, 2p)^{8} (3s, 3p)^{8} (3d^{10}) (4s, 4p)^{8} (4d^{10}) (5s, 5p)^{8} (4f^{14}) (5d^{9}) (6s^{1})

The second rule says that the electrons to the right are not shielding, but we are going to solve the exercise for the last level (6s), so we don't have electrons to the right.

For the third rule we have two considerations, if is ns or np and if is nd or nf:

For our case, we have an electro that is in ns, so the rule says that

-electrons within same group shield 0.35, except the 1s which shield 0.30

-electrons within the n-1 group shield 0.85

-electrons within the n-2 or lower groups shield 1.00

Now we can proceed with the calculation:

The first consideration in the third rule does not apply as we only have one electron on this level.

The second consideration will be as follow for the level 5, where we have 17 electrons.

Finally the third consideration will be for levels 1, 2, 3 and 4, where we have 14 for 4f, 10 for 4d, 8 for 4s and 4p, 10 for 3d, 8 for 3s and 3p, 8 for 2s and 2p and finally 2 for 1s, which gives 60 electrons.

So the result for S=(60*1.00 + 17*0.85) = 74.45

And the equation is: Z* = 78 - 74.45

So Z* = 3.55

3 0
3 years ago
What ionic bond occurs between what particles?
Sladkaya [172]
B positive and negative ion 
4 0
3 years ago
What is the percent yield of water from the combustion of propane (C3H8), if my theoretical yield is 8.17g of water and my actua
Naddik [55]

Answer:

im not sure

Explanation:

i went on here looking nobody answered yet

5 0
3 years ago
Other questions:
  • The reactants side of an equation is shown. How many silver atoms should the products side of the equation have after a chemical
    12·1 answer
  • Two teaspoons of salt are added to a glass of water which is then stirred until no more salt grains can be seen. Two more teaspo
    9·2 answers
  • Why are negative ions larger than the neutral atom from which they form?
    10·1 answer
  • 2 Points
    6·2 answers
  • All of the following are examples of electrolytic solutions, except __.
    12·2 answers
  • Which type of heat transfer causes a person sitting by the fire to feel warm
    9·2 answers
  • What are the chemical properties of neon?
    7·1 answer
  • Which part of the atom is involved in bonding?
    15·1 answer
  • Uses of baking powder​
    11·2 answers
  • Which of these elements is the most ductile?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!