PA ANSWER PO PLEASE ASAP!BRAINLIEST KO PO MAKAKASAGOT NG TAMA.
18. Which of the following elements does not belong to the group?
d. K
b. Na
a. H
19. Which of the following elements does not belong to the group?
a. Al
b. Ga
d. Zn
20. Which of the following groupings of elements are correct?
a. N, P, As b. F, CI, Br c. Be, Mg, Cad. He, Ne, Se
21. Which of the following groupings of elements are correct?
a. Be, Na, K b. C, Si, Ge c. Ne, Ar, krd. B, Al, Ga
22. Which of the following elements belong to Group 1A or Alkali Metals?
a. L
b. B
с. С
d. N
23. Which of the following elements belong to the Boron Family?
a. Na
b. Al
d. P
24. Which of the following elements belong to the Carbon Family?
a. K
b. Ca
C. Ga
d. Ge
25. Which of the following elements belong to Group 8 or Noble Gases?
b.
C. F
d. Ne
26. Which element belong to the Transition Metals group?
a. 77
b. V
C. Mn
d. All of the above
27. The group of elements represented by a "ladder" in the Modern Periodic Table of Elements.
a. Metals b. Metalloids
c. Non-metals
28. Group of elements found on the right side of the Modern Periodic Table of Elements.
d. None of the above
a. Metals b. Metalloids
29. The Law of Octaves states that:
c. Non-metals d. None of the above
a. N
a. The middle element has the average atomic mass of top and bottom elements.
b. The first element has the same properties as the eight element.
c. The group
of elements are grouped into three.
d. None of the above.
30. The Law of Triads states that:
a. The middle element has the average atomic mass of top and bottom elements,
b. The first element has the same properties as the eight element.
c. The group of elements are grouped into eight.
d. B and C
31. It is the positively charged particle.
a. proton
b. electron
c. neutron
d. positron
32. He presented way of classifying elements which he called the Law of Octaves.
a. Lavoisier
b. Newland C. Mendeleev d. Moseley
33. He arranged elements according to increasing atomic masses and is considered as the father of periodic
table.
a. Lavoisier
b. Newland c. Mendeleev
d. Moseley
34. The vertical columns in the periodic table are
a. family
b. orbitals C. groups
35. Which of the following statements indicate that matters are electrically neutral?
a. They carry positive and negative charges.
b. Matter are always positively charged.
c. Matter are always negatively charged.
d. They carry positive or negative charge.
36. The following statements are true about the atomic theory except one;
a. An atom can be created or destroyed.
d. periods
b. All matter is composed of extremely small, indivisible, indestructible particle.
c. Atoms are exactly alike, but they differ from atoms of other elements.
d. When atoms of different elements combine to form a compound, the constituent atoms are always
present in the same fixed ratio.
37. How did Henry Moseley help in the development of modern periodic table?
a. He adopted the law of octaves and arrange the elements according to atomic mass.
b. He improved Mendel's work by arranging the elements according to atomic number.
c. He discovered helium and argon
d. He predicted the existence of hidden elements,
38. If you are going to illustrate the Nuclear Model of Atom, then it will be;
b.
d.
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19. C
20. A
21. D
22. A
23. A
24. D
25. D
26. C
27. A
28. C
29. C
30. A
31. A
32. B
33. C
34. C
35. A
36. C
37. B
38. A