Which of these pairs of elements have the same number of valence electrons?

phosphorus (P) and chlorine (Cl)

berylium (Be) and calcium (Ca)

chlorine (Cl) and helium (He)

oxygen (O) and carbon (C)

A voltaic cell is constructed using the following half-reactions: Ag + (aq) + e - - - - > Ag (s) EoAg + = + 0.80 V Cu2 + (aq) + 2e - - - - > Cu (s) EoCu2 + = + 0.34 V Determine the cell reaction and the standard cell potential.

When an antimicrobial agent permanently denatures proteins thus preventing renaturation to their native states it is considered: Select one: a. bacteriostatic b. bacterial lysis c. an inhibitor of growth d. bactericidal

We create an electron with wavefunction ψ = [ψ1s (r) + 3ψ3s (r) ] / √ 10. Find the expected value hEi of the energy in that state. Use the energies of the hydrogen atom to extract your answer in electron volts.

In a certain acidic solution at 25 ∘c, [h+] is 100 times greater than [oh - ]. what is the value for [oh - ] for the solution? in a certain acidic solution at 25, [] is 100 times greater than [ ]. what is the value for [ ] for the solution? 1.

Whats the molar mass of potassium nitride

Explain the processes of convergence and divergence

How do the electrons in bonds (bonding domains) differ from lone pairs (non-bonding domains) ?

Сколько граммов соли образуется, если в раствор, содержащий 9,8 г серной кислоты, добавим другой раствор, имеющего 10 г гидроксида натрия?

Why do scientific theories change?

How many atoms are present in 34.69 moles of Mg