B. battery,wire,lightbulb, battery,lightbulb
C. battery, lightbulb, battery, lightbulb
D. wire,battery,wire,battery
Balance the equation with the correct coefficients.
2
3
4
5
Explanation:
When a chemical equation has equal number of atoms on both reactant and product side then it is known as a balanced equation.
For example,
Number of atoms on reactant side are as follows.
K = 1
Cl = 1
O = 3
Number of atoms on product side are as follows.
K = 1
Cl = 1
O = 2
Hence, to balance this equation we multiply by 2 on the reactant side and multiply KCl by 2 and by 3 on the product side.
Therefore, the balanced chemical equation is as follows.
Answer:
2KCl ⇒ 2KCl +
Explanation:
period?
Answer:
The nuclear charge increases, but the number of inner shielding electrons stays the same.
Explanation:
Their shielding does not change, so the effective nuclear charge — the charge felt by a valence electron — increases.
The valence electrons are pulled closer to the nucleus, decreasing the atomic radius.
For example, consider the elements of Period 3.
The number of protons increases as you go from one element to the next, but the number of inner electrons is constant.