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zaharov [31]
3 years ago
13

Why are the elements placed into groups/families?

Mathematics
1 answer:
VashaNatasha [74]3 years ago
5 0

Answer:

The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods.

Step-by-step explanation:

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Step-by-step explanation:

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3 years ago
TOY has coordinates T (-3, 4), O (-4, 1) and Y (-2, 3). a translation maps point T to T' (-1, 1). find the coordinates of O' and
NeX [460]

Answer:

Answer:  The correct option is (A) O' (−2, −2); Y' (0, 0).

Step-by-step explanation:  Given that the co-ordinates of the vertices of ΔTOY are T(−3, 4), O (−4, 1), and Y (−2, 3). A translation maps point T to T' (−1, 1).

We are to find the co-ordinates of the points O' and Y'.

The given transformation from T to T' is

T(−3, 4)   ⇒   T' (−1, 1).

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So,

and

That is, the transformation rule is

(a, b) ⇒ (a+2, b-3).

Therefore,

co-ordinates of O' are (-4+2, 1-3) = (-2, -2),

and

co-ordinates of Y' are (-2+2, 3-3) = (0, 0).

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Option (A) is correct.

8 0
3 years ago
What does 10 x 5 equal?
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I think it should be 50, really sorry if it wasn't multiplying. 

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3 years ago
Read 2 more answers
HELP URGENT DUE IN 5 MINUTES URGENT PLEASE
VARVARA [1.3K]
The answer is C

x - 2y = 4
-x -x
-2y = 4 - x (divide that by 2)

Y = 1/2x - 2
4 0
2 years ago
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