b. Assessment / What I can show 7 Activity 8: "Gained or Lost " Directions: Indicate how many electrons must be gained or lost by each of the following atoms to achieve a stable electron configuration (Ex: 3 lost, 2 gained) 1. Sr 2. Sb 3. Xe 4. S 5. Se MY SCORE: D. Guide Questions

Q: All atoms are mostly ______ with the nucleus having a net charge of  _________.    A. empty space,…

A:

Q: MCQ 13: The region around the nucleus which can be filled with one or two electrons is known as A.…

A: All atoms have the same number of electrons as protons. Negative electrons are attracted to the…

Q: 14. CHALLENGE. What is the atomic number of the as yet undiscovered element in which the 8s and 8p…

A: We have to find the atomic number of the as yet undiscovered element in which the 8s and 8p electron…

Q: Question 28 Which element has the ground state electron configuration 1s22s2p°3s23p4? a. V b. P С. S…

A: Solution- the complete ground state electron configuration for the sulphur atom.  atomic number of…

Q: Complete the electron configuration for I. [Kr]

A: Electronic configuration is a distribution of electrons of a atoms in a atomic or moleculer orbital.…

Q: Which element has 71 neutrons? a) 222Rn b) 146Nd c) 159Sm d) 140Ce e) 121Sn

A: We can find neutrons by subtracting number of protons form mass number.  No.of neutrons=mass…

Q: 2. 1st ionisation energy (kJ/mol) First lonisation Energy of the Group 1 elements 600 500 400 300 4…

A:

Q: wave has a frequency of 6.2 x 1013 Hz. What is its energy? a. 4.1 x 10-20 Ob.4.8 x 10-6 OC 1.1 x…

A: Applying formula E=hv

Q: a. b. n = 3 h = 4 l=3 C. h= 3 l=3 d. n = 6, l = 1 electrons Clectrons electrons ml = 6-1 Elections

A: we have to calculate the number of electrons

Q: Directions: Write the electron configuration for the following element. Element Electron…

A: Given table is :  Element Electronic configuration 1. Aluminium   2. Calcium    3. Chlorine…

Q: magn etic quantum number me designates the following i. The size of the orbital ii. The shape of the…

A: Atom consist of subatomic  particles called electrons, protons and neutrons. Protons are positively…

Q: Protons and neutrons have Mass .......... .... wwwww less O equal O high O Other O specific metal…

A: Atomic weight = 180gm/mole Density =16.6 gm/cm^3 ->it is BCC structure.

Q: What is a probable inter-nuclear distance between atoms that are bonded together? A. 1 um B. 10 nm…

A: There exists a net force (FN) between the atoms which are bonded together through a chemical bond.…

Q: SECTION 3: Communication 5. The development of the modern atomic theory was initiated by John Dalton…

A: Modal of Atom  by- i-Joseph J. Thomson  ii-Ernest Rutherford  iii-Neils Bohr's We need to Briefly…

Q: 27. Write the complete electron configuration (spdf notation) for each of the following. A) O B) Ti…

A:

Q: in general ionization energies Es) increase from left to right in the p Boron P there is a decrease…

A: To give the best explanation for the observation: In general, ionization energies (IEs) increase…

Q: Q3. What volume of 8 M sulfuric acid must be used to prepare 1.5 Lof a 0.10 M H,So, solution? A.…

A:

Q: The diagram below depicts the energy states and transitions in a hydrogen atom. 77 - infinity 11 = 4…

A:

Q: How many numbers are needed to locate an electron in an atom?

A: n l range from o to n-1 Orbital ml range from -l to +l sub orbitals ms 1 0 S 0 None -1/2…

Q: Which of the following trends can best be explained by the concept of "increasing effective nuclear…

A: Effective nuclear charge is the effective positive charge or attraction that is faced by valence…

Q: 9. Which is a false statement when comparing Mg with Ba? O a. Ba has more subshells than Mg. O b.…

A: In the realm of atomic structure, the distribution of electrons within an atom's orbitals plays a…

Q: The most intense line in a hydrogen glow-discharge plasma is the alpha-H line at 656 nm. What is…

A: Wavelength of the most intense line in a hydrogen glow-discharge plasma is 656 nm .We have to…

Q: Question 3 In what sublevel will potassium (K) lose 1 electron? X a. 1 b. 2 C. 3 d. 4

A: Elements looses electrons from the valence shell (outermost orbital) called as valence electron.  To…

Q: When a hydrogen electron makes a transition from n= 4 to n= 2, which of the following statements is…

A: Hydrogen electron makes a transition from n= 4 to n= 2.Given : Bohr model of hydrogen atom. To find…

Q: Select the BEST answer.  A Se atom has a smaller atomic radius than a Ca atom because ___________.…

A: Radius depends on attraction of electrons by nucleus. When the number of protons increases the…

Q: What is the maximum number of electrons that can occupy the orbit, n = 3? А. 2 В. 6 С. 8 10

A: orbit 3 is having sub-shell s, p and d

Q: 2. Stellar Formation and Evolution a. H +H →²¼H + b. 2H +H →32HE + c. 32He +32He → 42He + - -

A: In the stellar formation and evolution we know that there is formation of Helium .Lets take for…

Q: UESTION 8 The table below is partially completed for subshells A and B, where subshell B is the next…

A: Principal Quantum number (n) It refers to the energy of the orbital.  The value of the principal…

Q: 7. In an atom, the charge of the dense fraction is similar to that of alpha particles.

A: The answer is as follows:

Q: 4. Which of the following statements best describe a singularity? a. An infinitely small, hot area…

A: Nucleosynthesis first occurred within a few minutes of the Big Bang.

Q: Following successive ionization energies (IE in kJ/mol) are for which atom?    IE1 = 1085        IE2…

A: Ionization energy is the amount of energy needed to remove an electron from outermost shell of an…

Q: Which atom as the largest atomic radius? O a. Cs O b. Li О с. F O d. Zn О е. Mg

A: Atomic radius is the distance in an atom from nucleus to its outermost orbital. We have to find out…

Q: Question 25 Proporcione el nivel principal para un subnivel 2p. Give the principal level for a 2p…

A: Quantum numbers are a set of numbers that describe the position and energy of an electron in an…

Q: which four atoms have the greatest ionization energy

A: Ionisation energy:- Ionization enthalpy is the energy required to remove an electron from the…

Q: 6. In emission, a) an electron moves from an excited state to a lower energy state, and energy is…

A: An electron can move from one energy state to another by absorbing or releasing energy depending on…

Q: 44. What is the maximum number of electrons with the quantum numbers  n = 2  l = 1 Select one: a. 6…

A: The maximum number of electrons with the quantum numbers  n = 2 and  l = 1 has to be identified.

Q: The following electron configurations are to be used for questions 26-30! A. 1p³ B. [Xe] C. 1s²…

A: Electronic configuration : It is the distribution of electrons in atomic orbital according to the…

Q: The /=3 subshell contains how many total electrons? Select one: а. 14 Ob. 2 O c. 18 O d. 6 e. 10

A: Ans is A

Q: What is the electron configuration for aluminum, Al?

A: Atomic symbol of Aluminium is Al   Atomic number of Al is 13.

Q: What elemnt has 13 protons and 14 neutron

A: Given is , #proton= 13  # neutron = 14 We know , number of protons of elements are equal atomic…

Q: 18. Niels Bohr has made considerable contributions to the concepts of atomic theory. 1. Describe his…

A: According to  the Neil's Bohr Atomic model, a small positively charged nucleus in centre of atom  is…

Q: Which atom/ion has 12 electrons? O A. None of these have 12 electrons. O B. Na* O C. Na" O D. Na…

A: The smallest unit of ordinary matter that makes up a chemical element is an atom. Every solid,…

d-Block Elements

According to the modern form of periodic table, 118 elements are present which are subdivided as four blocks, namely, s, p, d and f-block elements based on the entry of the valence electron or last electron into which orbital.