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Which of the following are isoelectronic...

Which of the following are isoelectronic species
`I-CH_(3)^(+),II-NH_(2)^(-), III-NH_(4)^(+), IV-NH_(3)`

A

I, II, III

B

II, III, IV

C

I, II, IV

D

I and II

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The correct Answer is:
B
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Which of the following are isoelectronic species ? overset(o+)(CH_(3))(I), overset(ɵ)(NH_(2))(II), overset(o+)(NH_(4))(III) and NH_(3) (IV)

(i) State the formula and name the conjugate base of each of the following species : (a) H_(3)O^(+) (b) HSO_(4)^(-) (C ) NH_(4)^(+) (d) HF (e ) CH_(3)COOH (f) CH_(3)NH_(3)^(+) (g) H_(3)PO_(4)(h)H_(2)PO_(4)^(-). (ii) State the formula and name the conjugate acid of each of the following species : (a) OH^(-) (b) HPO_(4)^(2-) (C) H_(2)PO_(4)^(-) (d) CH_(3)NH_(2) (e) CO_(3)^(2-) (f) NH_(3)(g) CH_(3)COO^(-) (h) HS^(-)

Which of the following is a Bronsted acid ? (i) HCN , (ii) H_(2)PO_(4)^(-) (iii) NH_(4)^(+) , (iv) HCI

Which of the following is a Bronsted base ? (i) NH_(3) , (ii) CH_(3)NH_(2) (iii) HCO_(3)^(-) , (iv) SO_(4)^(2-)

Which of the following is a gas at room temperature ? CH_(3)NH_(2) (ii) CH_(3)CH_(2)NH_(2) (iii) (CH_(3))_(2) (iv) (CH_(3))_(3)N

Which of the following should be most volatile? (I) CH_(3)CH_(2)CH_(2)NH_(2) (II) (CH_(3))_(3)N (III) (IV) CH_(3)NHCH_(3)

Which of the following are Lewis acids ? (i) H_2O , (ii) BF_3 , (iii) H^+ , (iv) NH_4^+

CENGAGE CHEMISTRY-ATOMIC STRUCTURE-MANDATORY EXERCISE (Exercise Set IV)
  1. The maximum number of electrons which a shell (designated by n) can ac...

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  2. How many 3d electrons can have a spin of -(1)/(2)?

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  3. The core charge on oxygen is equal to:

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  4. An electron will have the highest energy in the set:

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  5. Which orbital is represented by the complete wave function Psi(320).

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  6. The principal quantum number of an atom is related to the:

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  7. In which (n+l) rules not applicable:

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  8. The total number of shell, subshell and orbitals are used in Fe^(2+):

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  9. If the value of (n + l) is more than 3 and less than 6, what will be t...

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  10. Explain the meaning of the symbol 4d^(6).

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  11. How many protons, electrons and neutrons are present m 0.18 g ""(15)^(...

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  12. In a multi-electron atom, which of the following orbitals describe by ...

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  13. Consider the ground state of Cr atom (Z = 24). The numbers of electron...

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  14. Quantum number 'm' of a free gaseous atom is associated with

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  15. Which of the following has maximum energy?

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  16. Quantum number n = 3,l = 2, m= +2 shows how many orbitals

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  17. Which of the following are isoelectronic species I-CH(3)^(+),II-NH(...

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  18. Which of the following has highest unpaired d-electrons?

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  19. Ground state electronic configuration of nitrogen atom can be represen...

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  20. Which of the following explain the sequence of filling the electrons i...

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