Which statements are part of the safety protocol for this lab experiment? Check all that apply

Wear a lab coat and safety goggles when performing an experiment.

Always measure chemical quantities twice before adding to solution.

Use caution when connecting electric circuits.

Do not drop the magnets.

Do not use electrical currents.

Do not bring bar magnets near magnetic devices.

Always disconnect circuits when not in use.

hope this

explanation:

covalent bonds

consist of pairs of electrons shared by two atoms, and bind the atoms to fixed orientation and requre high energies to break them

ionic bonds

when two atoms differ considerably in their electronegativity, then one of the atoms will lose its electron to the other atom. this results in a positively charged ion(cation) and a negatively charged ion (anion)

it forms an anion that has a larger radius. anions have a negative charge and are larger than the original atom.

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8