What can we tell from the column that an element is in?

The year the element was discovered

The number of protons in the nucleus

The number of electrons in the outer energy level

The mass of the atom

Write the chemical formula and Lewis structure of the following, each of which contains five carbon atoms: (a) an alkane (b) an alkene (c) an alkyne

The palm tree with island is a population or biome or community

A blank is the particle of an atom that moves rapidly in the cloud like region around the nucleus

Which group, metals or nonmetals, has the greatest tendency to gain electrons and to become negative ions?

Table salt can be separated into sodium and chlorine. Sodium is explosive. Chlorine is a gas that can kill people. What can be concluded from the statements above? A. A harmful compound can become harmless when its elements are separated. B.

Which of the following should be done when designing an experiment for a controlled scientific investigation? A. list the procedures B. plan the variables C. list the needed materials D. all of these

Assuming the octet rule is obeyed, how many bonds and how many lone pairs will atoms of oxygen (o) and nitrogen (n) have in order to have formal charges of + 1?

Explain why animals must eat food, but plants do not have to.

What is the theoretical yield of moles of hydrogen that can be produced from 0.032g of MG?

What did JJ Thomson think the Atom looked like?