The electron configuration that represents the atoms of chlorine in an excited state is 2-7-8. This is because in the excited state, an electron has moved from the second energy level to the third
The electron configuration represents the distribution of electrons in an atom's energy levels. The standard electron configuration for a ground state (normal state) chlorine atom is 2-8-7. However, when an atom is in an excited state, one or more electrons have moved to a higher energy level. In the case of chlorine, an electron from the second energy level could be excited to the third energy level. So, the electron configuration representing an atom of chlorine in an excited state would be option (2) 2-7-8.
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Answer:
b and d are physical
a and c are chemical
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Answer:
Burning of a House: Chemical Change
cutting candle wax: physical change
buring a candle: chemical change
keying a car: physical change.
b. neutron.
c. proton.
d. nucleus.
Answer:
The central portion is called neutron.
Explanation:
An atom has a central part known as nucleus and outer shells.
The central nucleus contains protons (the positively charged sub atomic particle) and neutrons (the neutral sub atomic particle).
The outer portion has negatively charged sub atomic particle known as electrons.
The atomic number of an element is the number of protons present in the nucleus.
Answer:
The Answer is Nucleus
Explanation:
The Nuleus is the brain of the atom always like the "boss"
B. reactivity
C. volatility
D. physical properties
O High temperatures and location in high latitudes
O Moderate temperatures and location in mid to high latitudes
O Warmer temperatures and location around the equator
Answer: D
Explanation:
Answer: High temperatures and location in high latitudes
Explanation:
Answer: Option (a) is the correct answer.
Explanation:
It is known that for non-metals, on moving down a group there will be decrease in electronegativity of elements.
Smaller is the size of a non-metal, more easily an electron will be attracted by its nucleus. Whereas larger is the size of element more is the number of electrons present in the atom.
Hence, more will be the number of shells and attraction between the nucleus and outermost electrons will decrease. As a result, an electron will not easily get attracted by a larger atom.
Thus we can conclude that fluorine is the element that has the greatest electronegativity.