A He atom consists of two electrons in orbit around the positive nucleus. If He

Question

A He atom consists of two electrons in orbit around the positive nucleus. If He loses one of its electrons it becomes a positive Ion.

True

False

Atoms are so tiny that are difficult to see. On way to see atoms is:

by using good telescopes

by using very good optical microscopes

by using Electron Microscopes

None of the above

Two Elements chemically bond to each other constitute a Compound.

True

False

Antimatter differs from Matter in that the electrons are electrically positive and the nuclei are electrically negative

True

False

In Bohr's model of the atom the Electrons are in orbit around the Nucleus and can have any possible energy.

True

False

QUESTION 17

Isotopes are atoms with the same number of protons but different number of neutrons in their nucleus.

True

False

We call an "element" any substance made of a single kind of atoms.

True

False

In Bohr's model of the atom the electrons are able to emit or absorb a photon by jumping from one definite orbit to another orbit.

True

False

A much more sophisticated and complete theory of the atomic structure is given by Quantum Mechanics. Quantum Mechanics is based on an Equation proposed by:

Max Planck

Niels Bohr

Erwin Schrodinger

None of the above

by using good telescopes

by using very good optical microscopes

by using Electron Microscopes

None of the above

Explanation / Answer

(1) losing an electron creates a positive ion - True

(2) None of the above

(3) True

(4) False

(5) False

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.