A period in the periodic table is a row of chemical elements. All elements in a row have the same number of electron shells.
An electron shell is the outside part of an atom around the atomic nucleus.
Elements present in horizontal rows are called periods.
Elements belonging to the same period have same no. of the shell as the electrons are added in the same shell of the element.
Learn more about the electron shells here:
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Answer:
The answer is below
Explanation:
1. With the aid of natural hues, the fox can change its color based on the environment it found itself in. For example, during summer and spring, fox color changes to dark to provide itself cover in the environment that is characterized by the brown dirt. Similarly, the fox color changes to white during winter and fall to blend with the snow.
2. In a bid to domesticate fox, it has been observed over many generations that the domesticated fox compared to wild fox has floppy ears and curly tails. The stress hormone level has reduced significantly and they possess a smaller adrenal gland.
'Heavy' hydrogen (the isotope deuterium) , 2/1H is involved ,
[2= mass number, 1= atomic (proton) number]
2/1H + 2/1H → 3/2He + 1/0n
The cation radii become larger across the period.
Atomic radii increase slightly and then start to decrease.
Atomic radii decrease slightly and then start to increase.
The correct option is D.
Transition metals are those metallic elements that are located in the central block of the periodic table. They exhibit various valency states and they generally have various colors. The atomic radius of an element refers to the measure of the size of its atom. For transition metals, their atomic radii decrease slightly and then start to increase, when one is moving from the left to the right of the periodic table.
Answer : The correct option is, Atomic radii decrease slightly and then start to increase.
Explanation :
Transition metals : It is defined as the element whose atom is ground state or ion in one of the common oxidation states, has incomplete d-subshell.
The general trend of atomic radii of transition metals is :
Generally the atomic radii of d-block elements in a series decreases with increase in atomic number but decreases in atomic size is small after midway that means almost remains same and at the end of the period there is a slight increase in the atomic radii.
Hence, the atomic radii decrease slightly and then start to increase of the transition metals when moving from left to right on the periodic table.
b. It would have six electrons in the innermost shell.
c. It would have eight electrons in the outermost shell.
d. It would have eight electrons in the innermost shell.
oxygen atomic number is 8.
electron configuration of O is 2,6
therefore O has 6 valence electrons. valence electrons are electrons in the outermost shell that are involved in chemical bonds
atoms to become stable should fulfill the octet rule. This is where the outermost shell should have 8 electrons
so atoms with incompletely filled outer shells take part in chemical bonds to gain a complete octet and to become stable
So O too after forming a chemical bond would have 8 electrons in the outermost shell.
correct answer is
c. It would have eight electrons in the outermost shell.
Answer: I know I'm too late but for all you people that have an exam it is C.
Explanation:
Answer:
2+
Explanation:
The proton no. of this element is 65-35=30
Since there are 30 protons and 28 electrons, the net charge is 2+