NaOH is an example of an ionic crystal.
Option a
<h3><u>Explanation:</u></h3>
Sodium Hydroxide is a "white solid ionic compound" consisting of sodium cations Na+ and hydroxide anions . If we look at the crystal structure of NaOH, we can see that it has the combinations of ionic and covalent bonds. The bond that is shared between Oxygen ( O ) and Hydrogen ( H ) is the covalent bond.
The Sodium ( Na ) is bonded with an "ionic bond to the hydroxide part of the compound". NaOH is an ionic solid because it is formed by the combinations of metal and non-metal. When the crystal of NaOH is dissolved in water it dissociates into Na+ ions (which is ionic in nature) and ions which bonds ionically to the other compounds.
Answer:
a colloid
Explanation:
Paint is classified a colloid
A colloid is a homogenous of two phases which are the dispersed phase and the dispersion medium.
The dispersed phase is analogous to the solute of the true solution while the dispersion medium is analogous to the solvent.
- The particles of colloids are larger than those found in a solution.
- Their particles do not settle on standing
- Their particles pass through ordinary filter paper
- Their particles do not pass through permeable membranes
Answer:
Neutrons
Explanation:
An isotope has more or less number of neutrons in the nucleus.
The nucleus of an atom is made up of two fundamental particles, the protons and the neutrons. Protons are positively charged particles in an atom. Neutrons do not carry any charges whatsoever.
- Isotopy is the existence of two or more atoms of the same element having the same atomic number but different mass numbers due to the differences in the number of neutrons.
- Isotopes differ in masses due to the number of neutrons they contain.
- Therefore, they show similar chemical properties.
Answer:
Option A.
Explanation:
This is the reaction:
2Na + Cl₂ → 2NaCl
By stoichiometry, ratio is 2:2. So 2 mol of NaCl are produced by 2 moles of Na.
So the answer is 3.6 moles
Answer:
is easy to poiling
Explanation:
also is dificult to melting