independent variable is being controlled and the dependent variable is being tested and being easured in a scientific experiment
Answer:
a. KCl
Explanation:
a. KCl - made of 2 elements
b. NH4Cl
c. KClO3
d. NH4ClO3
Answer: The elements with properties intermediate between those of metals and nonmetals are called semimetals (or metalloids).
Answer:
the number of electrons is 13 and neutrons is 14
Answer:
Explanation:
There are principles that guides the distribution of electrons into the energy levels in an atom. Some of the principles are:
1. The maximum number of electrons in the orbitals of sublevels are:
2 electrons for s-sublevel with one orbital
6 for p-sublevel with 3 orbitals
10 for d- sublevel with 5 orbitals
14 for f-sublevel with 7 orbitals.
The maximum number of electrons in an orbital is 2.
2. Aufbau principle: it states that sublevels with lower energy are filled up before those with higher energy. Sublevels have pattern of filling.
3. Pauli exclusion principle: it states that no two electrons can have the same set of the four quantum numbers.
4. Hund's rule of maximum multiplicity: electrons goes into degenerate orbitals of sub-levels singly before pairing starts.
