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Greeley [361]
3 years ago
5

Periodic law states that when the elements are arranged according to their atomic numbers, this allows elements with similar pro

perties to appear at regular intervals. Predict the group of elements and their number of valance electrons that will combine in a 3:2 ratio to with calcium
Chemistry
1 answer:
jeyben [28]3 years ago
3 0

Answer:

is a mutiply choice answer just to be specific

Explanation:

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What is an alkali metal with fewer than 10 protons in its nucleus?
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            Lithium

Explanation:

                  Alkali metals are group of metals which are present in first group of periodic table. As we know atomic number is equal to number of protons contained by a particular element. Therefore, the alkali metals along with there number of protons are listed below;

Alkali Metal                                         Number of Protons

Lithium                                                               3

Sodium                                                             11

Potassium                                                         19

Rubidium                                                         37

Cesium                                                             55

Francium                                                          87

Hence, it is cleared from above table that Lithium is having fewer protons than 10.

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