Answer is: <span>The general rule of thumb is that the smaller a substance's atoms and the stronger the bonds, the harder the substance will be.
If the distance between atoms is higher, lesser will be attraction between electrons and protons of atoms, smaller distance means stronger atoms attraction.
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Answer:
The elements in Group 2 (beryllium, magnesium, calcium, strontium, barium, and radium) are called the alkaline earth metals (see Figure below). These elements have two valence electrons, both of which reside in the outermost s sublevel. The general electron configuration of all alkaline earth metals is ns
Answer:
The atomic number of the sodium atom is 11. The atomic mass number can be estimated by rounding the atomic mass to 23.
Explanation:
The atomic number of the sodium atom is 11. The atomic mass number can be estimated by rounding the atomic mass to 23.
Answer:
its a
Explanation:
because a mutation is a change and a change can be a mutation
The atomic number of calculated as number of protons + number of neutrons. The number of protons are the same as atomic number. This implies that Nitrogen has seven protons. To get the the number of neutron we minus atomic mass from number of protons
that is 14-7=7 neutrons
