Question

Question 4 &7 please

с [Kr] 5524d6 D [Kr] 552 408 Answered Change your responses to resu Question 4 Strontium has 3 stable isotopes with mass numbers 86, 87 and 88. Their relative abundances are 9.97%, 7.0% and 82.6% respectively. How do the number of electrons and the electron configurations compare for atoms of the three isotopes? Each has a different number of electrons and the same electron configuration B It is impossible to decide because electron configurations do not apply to isotopes с Each has the same number of electrons and the same electron configuration D Each has a different number of electrons and different electron configurations Unanswered Question 5 The bonding in front) nitrite is A bonic and metalle Metallic and covalent

Answer 1

Question 4 Isotope: Atoms witha different same number of pastons but number of Mentions. And, no of e o no- of protons, in a neutral atom. thus elechons Same of : all isotopes have some no. electonic conf configuration

Question : cip 1, 2 - dichloroethene: Ice elechonegative 1 the Mnet To ce is more thon Carbon L. 8p2 hybridiped Carbon E•N 10 more than H Here, net election movement will be in upward direction & since, that (nlet dipde moment) to molecule i8 polar. 1,2-dichloso ethane : Here, ce also net dipole Mnet adds up And, Н times to Н и H . this molecule is also | Polar.