A student listed three ways to predict if a bond is ionic.

1 answer:

4 0

1 and 3 only because metal are easily to loss electron while non metal are difficult to loss electron that's why it called heavy elements.

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Which of these statements is not true about chemical reaction rates?

xeze [42]

Temperature can change a reaction rate because adding or taking away heat means energy is being added or taken away. When energy is added, the particles speed up, so there is a greater chance of the reactants colliding to form the products, which increases the reaction rate. When energy is taken away, the particles more slower, so they don't collide as easily, which slows down the reaction rate.

Therefore, the answer is D.

3 0

3 years ago

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_Li + __F2 → _LIF How do I balance this?

Semmy [17]

Answer:

2Li + F₂ → 2LiF

Explanation:

The reaction expression is given as:

Li + F₂ → LiF

We are to balance the expression. In that case, the number of atoms on both sides of the expression must be the same.

Let use a mathematical approach to solve this problem;

Assign variables a,b and c as the coefficients that will balance the expression:

aLi + bF₂ → cLiF

Conserving Li: a = c

F: 2b = c

let a = 1, c = 1 and b = $\frac{1}{2}$

Multiply through by 2;

a = 2, b = 1 and c = 2

2Li + F₂ → 2LiF

5 0

3 years ago

Most elements are _____? nonmetals metalloids metals

NARA [144]

Answer:Most elements on the periodic table are metals. Looking at the periodic table shows that most elements are metallic.

Explanation: Sorry if this want what you were looking for

4 0

2 years ago

What are 3 examples of physical change?

bazaltina [42]

Just breaking stuff so yea that’s it

3 0

3 years ago

What subatomic particle gives off visible light when it drops back down to a lower energy state?

Black_prince [1.1K]

The subatomic particle that gives off visible light is electrons

4 0

4 years ago