Answer:
Fe+2HOH=Fe(OH)_2+H_2. Iron is divalent to hydrogen and water.
Explanation:
first ionization energy
(1) decreases
(2) increases
(3) decreases, then increases
(4) increases, then decreases
Answer: The first ionization energy for the first five elements of Group 15 decreases.
Explanation:
Ionization energy is defined as the energy required to remove an electron from the outermost shell of an isolated gaseous atom. It is represented as
Ionization energy decreases as we move down the group. This happens because the number of shells increases as we move down the group. The electrons are added in the new shell around the nucleus.
This results in the shielding of outermost electrons more from the inner ones, which decreases the attraction between the outermost electrons and the nucleus. Hence, the removal of electron from the outermost shell becomes easy and requires less energy.
Hence, the first ionization energy for the first five elements of Group 15 decreases.
Answer:
Three more electrons
Explanation:
Compared to a phosphorous atom (P) the P3- ion has gained 3 electrons resulting in the trivalent negative charge. P3- is a reduced state of P and to name some properties:
Answer:
The increase in CO2 will affect crop plants by causing in increase in global warming and therefore, will stunt plant growth and cause excessive heat to kill the plants.
Explanation:
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