There are 12 protons and 10 electrons in a <span>Mg2+</span> ion, the normal amount of neutrons is 12<span>.
</span>Explanation:
Magnesium is an element with atomic number 12. This means that every magnesium atom will have 12 protons.
In a magnesium atom, there are 12 electrons, to make the atom have a neutral charge. When an ion is formed, the magnesium atom loses electrons. The <span>2+</span>charge shows that the magnesium ion has two more protons than electrons. The proton number for magnesium does not change, so <span>Mg<span>2+</span></span> must have two less electrons, i.e. 10 electrons.
The number of neutrons varies among different isotopes of magnesium. An isotope of an element means it just has different amounts of neutrons.
The most common isotope of magnesium is <span>24Mg</span>. This 24 indicates the total number of protons and neutrons. Magnesium has 12 protons, so must have
<span>24−12=12 neutrons</span>
Other isotopes of magnesium have different numbers of neutrons, i.e. <span>25Mg</span> has 13neutrons, <span>26Mg</span> has 14 neutrons. <span>24Mg</span> is most likely being referred to in the question, though.
Answer:
Elements that fall between those on the left and right sides of the periodic table
Explanation:
Transition metals:
These are present at the center of periodic table.
These are d-block elements.
They include the elements of group 3 to 12 in periodic table.
They have large charge to radius ratio.
They mostly form paramagnetic compounds.
They shoes more than one oxidation state.
They form colored compounds.
They all have high melting and boiling point.
They have high densities.
They form stable complexes.
The elements of f-block are also transition but they are called inner transition.These are consist of two series lanthanide and actinides.
Answer:
C: It depends on the entropy and enthalpy of the reaction.
Explanation:
Gibbs free energy is defined as the maximum amount of non-expansion work that can be gotten from a closed system. Now this work is usually done in place of the system’s internal energy and Energy that is not extracted as work is usually exchanged with the immediate surroundings in the form of heat.
Proton:
Positive
Found in Nucleus
Mass of 1 AMU
Neutron:
Neutral
Found in Nucleus
Mass of 1 AMU
Electron:
Negative
Found in orbitals
Mass of 0 AMU
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From the Boyle's law, it is clear that volume is inversely proportional to pressure. Thus it is prudent to say that, P1V1=P2V2
From the question above,
P1=1atm
P2=3.8atm
V1=?
V2=7.6L
Hence, 1*V1=3.8atm*7.6L
V1=28.88L
