Answer:
The configuration of the atom would be 2-8-2.
Explanation:
Any atom of an element combines with other element to complete its octet and become stable.
The electron configuration of the given atom is 2-8-6. That means the atom has 6 electrons in its outermost shell. To become stable the atom should have 8 electrons in its outermost shell. The given atom has 6 electrons so it either lose 6 electrons or gain 2 electrons to complete its octet.
But we know the atom having 5,6,7 electrons in its outermost shell they do not lose, they gain either 3 or 2 or 1 electrons to complete its octet.
So we say that atom with the electron configuration 2-8-6 bond with the atom having electron configuration 2-8-2.
Number of moles = mass of Ni /molecular mass of Ni
mass of nickel = 86.4 g
molecular mass of nickel = 58.69
number of moles of Ni in 86.4 g
=86.4/58.69
=1.472 mol
(rounded to four significant figures instead of three because the first digit of the answer starts with a 1).
Answer:
If you are not eye to eye with the miniscus you would be reading wrong because you have to read right from the middle because of you won’t you’d always be off
Explanation:
Electromagnetic waves
Unlike mechanical waves, these waves can travel though vacuum because they do not need a medium of travel.
Explanation:
This is how sunlight reaches earth. Sunlight has many wavelengths if electromagnetic waves called an electromagnetic spectrum. The electromagnetic spectrum ranges from the high energy waves called gamma rays (they have the shortest wavelength and highest frequency). On the other end of the spectrum are the lowest energy waves called radio waves (they have the longest wavelength and lowest frequency).
Learn More:
Check more on electromagnetic radiation here;
brainly.com/question/1551400
brainly.com/question/1530050
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Answer:
Lithium has two naturally occurring isotopes. Lithium-6 has an atomic mass of 6.015 amu. Lithium-7 has an atomic mass of 7.016 amu. The average atomic mass of lithium is 6.941 amu.
Explanation:
