Questions tagged 'Atoms'
31 questions
How many moles of Pb are in 4.71 x 10^21 Pb atoms?
How many moles of lead (Pb) are present in 4.71 x 10^21 atoms of Pb? I have calculated possible answers, which include 0.00782, 2.84 x 10^45, 207.2, and 6.022 x 10^23. Could you help me determine the...
Which quantity can vary among atoms of the same element
What quantity can vary among atoms of the same element?
If an atom has 1 to 3 valence electrons, what will it do?
If an atom has 1 to 3 valence electrons, what actions might it take in terms of electron behavior? A. Accept electrons B. Donate electrons C. Move electrons to a lower energy shell D. Move electrons...
Feb 10, 2025
How many Li atoms are contained in 97.9g of Li?
I would like to verify my answer for a homework question: How many lithium (Li) atoms are contained in 97.9 grams of lithium? Thank you!
Compared to atoms of metals, atoms of nonmetals generally
Compared to metal atoms, how do nonmetal atoms generally differ in terms of their properties and behavior?
Feb 05, 2025
How many lone pairs of electrons exist on the central atom in ammonia (NH3)?
How many lone pairs of electrons are present on the central atom in ammonia (NH3)? Two Four Three None One
Which of these substances contains the most total atoms per molecule?
Which of the following substances contains the highest total number of atoms per molecule? a) Na2PFO3 b) H2SO4 c) Ni(NO3)2 d) NbCl5
Jan 30, 2025
Help with chemistry question?
Can you help me with the following chemistry questions? The radius of a gold (Au) atom is approximately 1.35 angstroms. a) Please express this distance in both nanometers and picometers. b) How many...
an atom of fluorine has 9 electrons. its second energy level has?
An atom of fluorine has 9 electrons. How many electrons are present in its second energy level? A. 2 electrons B. 8 electrons C. 7 electrons D. 9 electrons
How do i find How many protons, neutrons, and electrons in Lithium?
How can I determine the number of protons, neutrons, and electrons in a lithium atom?