This is Science.Its about the peridic table. Tell me what percent you think your right. i.e. 100% 50%?

Question

Short Answer
1.Why was Mendeleev's periodic table useful

2.How is Moseley's basis for arranging the elements different from Mendeleeve's

3.How is the periodic table like a calender

4.Describe the location of metals, metalloids, and nonmetals on the periodic table

Concept maping:Use the folowing terms to create a concept map: periodic table, elements, groups, periods, metals, nonmetals, metalloids

Critical Thinking

5. When an element with 115 protons in it nucleus is synthesized, will it be a metal, a nonmetal, or a metalloid.Explain

6.Why was Mendeleev not able to make any predictions about the noble gas elements

7.Your classmate has offered to give you a piece of sodium he found while hiking. What is you response?explain

8. Determine the identity of each element described below
a.This is the most reactive metal in its period and cannot be found uncombined in nature. Each atom of the element contains 19 protons

b.This nonmetal is in the same group as lea

Answer 1

100%

Answer 2

1) Mendeleev's periodic table is useful because he arranged the atoms in accordance to atomic weight. Based on the atomic weight of atoms, chemist would be able to decipher what atom is in question.

2) Moseley's periodic table is different as he arranged the atoms in terms of proton numbers.

3) It is like a calender because the numbers are increasing in sequence.

4) metals are found on the left most of the periodic table. metalloids (or transition metals) are found in the middle and non metals are found on the right of the periodic table.

Answer 3

one million-Periodic table on the right, split to components, components split to metals, metalloids and nonmetals. additionally from Periodic table split to teams and split to classes. (one hundred%). 2-it's going to be a poor metallic (on the metallic area yet touching the metallic/nonmetal line). (one hundred%). 3-Mendeleev arranged his components via AMU not Atomic selection so he incredibly did not have the in families like we do as we communicate (ninety.one hundred thirty five%). 4-i could have 2 responses. First i would not have self assurance him, because of the fact that, by way of it reactivity, Na isn't recent in elemental style in nature. 2nd, perhaps he got here across some in a bottle that somebody lost or positioned there. for that reason i could so no (whether i might desire to think of of a few tremendously cool issues to do with it) because of the fact this is risky, reacting in spite of touch to air. (one hundred%). 5a-Potassium (ok) (one hundred%). 5b-Carbon (C) and Silicon (Si) might desire to the two be spoke back wisely (one hundred%). Get an "A".

Answer 4

1.It was the first usable
3.They are seperated based on their # of orbitals
7.No. Sodium is a metal, and is only safe to eat when chemically bonded with chlorine gas, which makes NaCl, or table salt
8.Potassium
50%