3 years ago

Cations are formed from the?

1 answer:

4 0

A caption is a positively charged ion. They are formed when an ion loses one or more electrons. Typical it is the loss Of their valence electrons.

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Enter the expression 14/7N +a

choli [55]

2n+a is the simplified expression

3 0

3 years ago

Which elements are most metallic? Li, Be, B, C

charle [14.2K]

Firstly, carbon isn't a metal.

Boron is a metalloid.

Beryllium is the least metallic alkaline earth metal, and lithium is the least metallic alkaline metal.

Both are metallic, and have metallic appearances and conduct electricity, but beryllium is more brittle than lithium.

So, I'd say Li and Be are equal.

4 0

3 years ago

8. [06.02]

Kruka [31]

Answer:

Exothermic reaction

Explanation:

Consider the reaction

A + B ⟶ C

If energy is released, the product C is at a lower potential energy level than the reactants A and B (see diagram).

Conversely, the reactants A and B are at a higher energy level than the product.

B is wrong. In an endothermic reaction, the reactants A and B are at a lower energy level than the product.