When, it donates electons.
as for example take
NaCl ( sodium chloride)
it's an ionic compund,
that means it is formed by donating or gaining electrons
Na is writen first than, it must be electropositive i.e it has donated electons which made it positive and the clorine gains electron so it's electronegative.
Na is positive because
as we know it's atomic number is 11 that means it has 11 protons and 11 electrons
now, when it donate electon it has, greater number of protons whose change is +ve so the atom becomes overall positively charged ion or cation.
and something same happens in clorine and because it gains one electron and the number of electrons increase in it by 1 whise charge is -ve so, the atom becomes negatively charged ion or anion which has a -1 charge.
The number 23.0702 has 6 significant figures.
To answer this, you must have the rules for significant figures,
1. All non-zero numbers ARE significant
2. Zeros between two non-zero digits ARE significant
3. Leading zeros are NOT significant
4. Trailing zeros are ONLY significant if the number has a decimal point
The number 23.0702 has 4 non-zero numbers(rule 1), and both zeros are between two non-zero digits(rule 2). Since all 6 figures in the number 23.0702 are significant, the number 23.0702 has 6 significant figures.
When you put one hand in ice water and the other in warm water, the hand in warm water will feel the room temp water cooler, and the hand in cold water feel room temperature water warmer.
<h3>What is thermal adaptation?</h3>
The ability of a body to adjust to temperature is called thermal adaptation. Mammals are the animals who can adjust the temperature of their body.
The reptiles are not able to adjust their body temperature, because they are poikilothermic. They have to take the help of outer environment to adjust their body temperature.
Thus, when you put one hand in ice water and the other in warm water, the hand in warm water will feel the room temp water cooler, and the hand in cold water feel room temperature water warmer.
Learn more about thermal adaptation
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The element Sodium will
form a +1 cation, while the bromine a -1 anion. Since the anion bromine is
always a liquid, therefore its symbol is Br2(l). So, the chemical equation for
their reaction is: <span>
<span>2Na(s) + Br2(l) -> 2NaBr(aq) </span></span>
Answer:
<em><u>For </u></em><em><u>balancing</u></em><em><u> </u></em><em><u>this </u></em><em><u>equation</u></em><em><u> </u></em>
<em><u>we </u></em><em><u>need </u></em><em><u>to </u></em><em><u> </u></em><em><u>put</u></em>
<em><u>Ag2O</u></em><em><u>. </u></em><em><u>=</u></em><em><u> </u></em><em><u> </u></em><em><u>2</u></em><em><u> </u></em>
<em><u>Ag </u></em><em><u>=</u></em><em><u> </u></em><em><u>4</u></em><em><u> </u></em>
<em><u>O2 </u></em><em><u>=</u></em><em><u> </u></em><em><u>1</u></em><em><u> </u></em>
<em><u>Hope</u></em><em><u> it</u></em><em><u> will</u></em><em><u> </u></em><em><u>help</u></em>
