Answer: Option (d) is the correct answer.
Explanation:
The atomic number of Al is 13, so the electronic configuration of is as follows.
=
= [Ne]
The atomic number of Sc is 21, so the electronic configuration of is as follows.
=
= [Ar]
The atomic number of As is 33, so the electronic configuration of is as follows.
=
= = [Kr]
The atomic number of Ga is 31, so the electronic configuration of is as follows.
=
=
Therefore, we can conclude that galium (Ga) ion does not have a noble gas configuration in its ground state.
Answer:
The acronym is used to remember evidence of a chemical change.
Explanation:
P=precipitate
U=unexpected color change
F=fizzing
A=aroma
R=replaced by a new substance
T= temperature change
Answer:
B&C
Explanation:
Atoms combine in whole number ratios to form compounds.
and
Atoms cannot be created or destroyed during a chemical reaction.
Answer:
Proton, stable subatomic particle that has a positive charge equal in magnitude to a unit of electron charge and a rest mass of 1.67262 × 10−27 kg, which is 1,836 times the mass of an electron.
Answer:
iron oxidizes
Explanation:
Being a solid, melting, and attraction are all physical properties.