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
algol13
3 years ago
13

What do the group number and period number of an element tell you? (Something about valence electrons?)

Chemistry
1 answer:
frozen [14]3 years ago
7 0

The group number tells you the total number of electrons present in the outermost orbit of an atom. In other words, group number tells you the number of valence electrons of an atom.

You might be interested in
Lead (II) nitrate and magnesium iodide solutions are mixed
sashaice [31]

The molecular equation :

MgI₂(aq) + Pb(NO₃)₂(aq) → Mg(NO₃)₂(aq) + PbI₂(s)

The net ionic equations

Pb²⁺(aq) + 2I⁻(aq) → PbI₂(s)

<h3>Further explanation</h3>

Given

Word equation

Required

The molecular equations and  the net ionic equations

Solution

The chemical equation can be expressed in terms of:

  • word equation
  • skeleton equation
  • balanced equation

The equation of a chemical reaction can be expressed in the equation of the ions

When a spectator ions are removed, the ionic equation is called the net ionic equation

A molecular equation is a chemical equation that has been balanced and is written in molecular (not ionic) form

The molecular equation :

MgI₂(aq) + Pb(NO₃)₂(aq) → Mg(NO₃)₂(aq) + PbI₂(s)

the ionic equation :

Mg²⁺ +2I⁻ + Pb²⁺ + 2NO₃⁻ → Mg²⁺ + 2NO₃⁻ + PbI₂

the net ionic equations

Pb²⁺(aq) + 2I⁻(aq) → PbI₂(s)

5 0
3 years ago
Escribe dos ejemplos para cada tipo de mezcla entre: ● Sólido-sólido:
saul85 [17]

Answer:

1) arena y azucar

2) agua fangosa

3) agua en el aire

4) oxígeno en nitrógeno

5 0
3 years ago
What is elastic energy ​
aleksley [76]

Answer:

Explanation:\

Elastic energy is energy stored in an object when there is a temporary strain on it – like in a coiled spring or a stretched elastic band.

The energy is stored in the bonds between atoms. The bonds absorb energy as they are put under stress and release the energy as they relax (when the object returns to its original shape).

8 0
3 years ago
Read 2 more answers
WHO KNOWS HOW TO DO THISSS NEED HELP RN PLS<br><br> Li PO4 + AlF →
Alecsey [184]

Explanation:

Your chemical equation should look like this:

Li3PO4 + AlF3 --> 3LiF + AlPO4

This is the balanced equation for a double-displacement reaction

4 0
3 years ago
Write down the names, physical properties, and inertness of NOBLE GASES ( group no. 8)
o-na [289]

Answer:

There's No Answer Im Sorry

4 0
3 years ago
Other questions:
  • Which of the following describes the principle of conservation of change
    10·1 answer
  • What’s the molar mass of Rb3n
    14·1 answer
  • You give a sample containing .90 moles of a substance
    7·1 answer
  • Calculate the ΔG for the following system. Then state if the system is spontaneous or not spontaneous. ΔH = 147 kJ ΔS = -67.0 J/
    11·1 answer
  • Explain in detail what happens when an acid and a base mix. Try to use the words ions, attraction, neutral and bonding in your a
    12·1 answer
  • Q1.What is the mass of 5 moles Of 1.Mg
    8·2 answers
  • According to the law of conservation of mass, how much mercury was present in the mercury (II) oxide? *
    7·1 answer
  • Can someone help me please ?
    12·1 answer
  • Pick one please <br> A. <br> B. <br> C. <br> D.
    9·2 answers
  • Which properties are affected by temperature?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!