Answer:
0.75 M
Explanation:
Molarity = moles of solute / liters of solution
so;
Molarity =
Use the group numbers to determine the number of valence electrons. The Group number of a non-transition metal can be used to find the number of valence electrons in an atom of that element. The ones place of the group number is the number of valence electrons in an atom of these elements.
Answer:
True
Explanation:
Ionic bonds are formed by complete transfer of electronic from one to another atoms. The metals are electron donor and non metal are the electron accepter.
Consider the example of sodium chloride. Sodium is metal and chlorine is non metal. Sodium is present in group one and have one valence electron. It loses one electron and get stable electronic configuration.
While chlorine is present in group 7A and have seven valence electron. It require one more electron to complete the octet. Thus hen sodium and chlorine the electron lose by sodium is accepted by chlorine and form ionic compound.
The compound having ionic bonds generally have moderate to high boiling points and melting point because of greater electrostatic interaction. Their electrical conductivity are high and these minerals tend to dissolve in water.
Answeeeeer:
A. cell
Explanation:
Since A is the smallest in the chart, that would correspond to the cell because thats the smallest out of Tissue, Organ and Organism.
The number 90 has 1 sig fig.